Fluids and filters - proper selection

The content of any article might be expanded / improved in the future - revisit it sometimes.
Seen a mistake? Know something that isn't written? Edit and change this article yourself!
Some images in the article (if present) can be enlarged by clicking on them.

Introduction

Quick intro

If you don't have the time, nerves or intellectual capacity to read the full chapters, just skip over to each "quick" subchapter for specific advice on which proper fluid or filter product to select.

This article contains recommendations and links to specific commercial products. There is no (or should be no) affiliation nor interest for anyone on this web site if you buy any of those products. The purpose of mentioning them is simply to list any compatible products which are known to exist. All lists of those products are sorted alphabetically.

Full intro

• Beware that selecting a suitable / properly matching fluid and filter (oil, coolant, etc.) is vital for the longevity of the mechanical systems which use those fluids!
  • For example, the longevity of the engine, gearbox, etc. is highly dependent on what exact oil type is used.

• Using a high quality fluid from a good manufacturer is one thing, but equally as important is using a properly matching type of fluid.
• However, selecting a properly matching fluid type can be a rather tricky endeavor, as there can be significant differences among seemingly unimportant specification details.
• For example, the most common misconception regarding oils is that only the viscosity specification is relevant / important.
  • This would mean choosing an engine oil only by looking if it's 10W-40 or 5W-30 or etc.
• Oil's viscosity is just one of its attributes.
• Oils have many other chemical attributes which are equally as important.

• Generally, the petrochemical industry and technology is so vastly complicated in discerning all the types, standards, classifications, ranges, compositions, ratings, regulations, gradings and whatnot, that it is very hard even for professional petro-chemists to discern it all.
  • This is additionally made worse by several "moot" standards and classifications in that industry (example are API GL-x classifications).
    • In short, the industry has never settled on properly formulated international standards about many material and chemical characteristics of petrochemical products, so there are various country-level or even "industry jargon" standards in use around.
      • For example, API classifications are an old American industry rating which has not yet been replaced by anything better designed and with world-wide consensus.

• An additional layer of confusion is of course added by various well-established street-garage myths and misconceptions, which are sometimes "reinforced" by some tricky / slimy official factory claims.
  • Example 1: "A color of an engine coolant determines its type."
    • Even some car manufacturers (Ford for example) refer to coolant types by color when directing their customers on which coolant type to buy!
      • That's because they expect you to select only from their genuine line of their "own" coolant products, and they know which of their colors represent each coolant type!
  • Example 2: "Transmission (gear box, differential) oils should never be replaced."
    • Today many car manufacturers specify their factory filled transmission oils as "lifetime".
      • What they mean in practice is: "Those oils will certainly last until the end of the mileage or time covered under our warranty. After that, we don't care. In fact, we care that you come to us later for an expensive transmission overhaul after that stale worn oil wrecks it!"

• The result of all this mess is that there is a very high chance that everyone except the most proficient users will make a wrong selection of fluids and filters for their vehicle.
• Most alarmingly, the majority of car mechanics are also misled as a result of all these industrial mis-standardisations and street-garage misconceptions, as well as some malicious factory claims.
  • Therefore, your "trusted and honest" car mechanic to who you entrust fluid and filter selection and replacement for your vehicle might be no more educated about the topic than you are!
    • He'll be definitely less educated than you after you read this article!

• Luckily, ordinary motor vehicle users do not need to dive deep into all those peculiarities of the petrochemical and automotive industry.
  • Otherwise, it would have to be a really deep dive indeed!
• As long as a few specific guidelines are being adhered to, an ordinary user can make a proper fluid selection.

Common notes about engine and transmission oils

Quick advice

Engine oils

For petrol Jimnys, choose a high quality engine oil with the following properties:

• Fully synthetic;
• Conforms to API SL, SM or SN standard;
• Suzuki's petrol engines accept several oil viscosities, and the ideal one might depend on the climate in your area;
  • The factory suggested SAE engine oil viscosities for your particular engine are written in the wiki article "Regular maintenance consumables".

For diesel Jimnys, choose a high quality engine oil with the following properties:

• Fully synthetic;
• Conforms to ACEA B3 or B4 standard;
  • If you really can not find any engine oil which satisfies this, then use an ACEA C3 engine oil.
• The best viscosity is SAE 0W-40, but it is quite expensive.
  • SAE 5W-40 viscosity has been proven as a great price-performance compromise.
  • Do not use any engine oil with SAE xW-30 viscosity!!!

Oils for the manual gear box and for the transfer box

All manual gear box and transfer box models in Jimnys require the same transmission oil specifications: API GL-4, SAE 75W-90. There are not many such transmission oils in the aftermarket.

Oil in the gear box and in the transfer box should be changed regularly, even if your mechanic (or even your vehicle's user manual) suggest that there is no need to !

Known fully compatible fully synthetic oils:

• Castrol Syntrans Multivehicle 75W-90;
• Ravenol Motogear 75W-90;
• Red Line MT-90;

Known fully compatible semi synthetic oils:

• Gazprom G-Box GL-4 75W-90;
• Gazprom G-Box Expert GL-4 75W-90;
• Ravenol TSG 75W-90;

Fully synthetic oils are generally recommended over semi-synthetic oils, but in practice a high quality semi-synth oil might be just as good or even better than a low quality fully synth oil.

Semi-synth oils are a completely fine choice if you change your transmission oils regularly (every 30-40 000 km or more frequently)

.

If you can not find a fully compatible (API GL-4, SAE 75W-90) transmission oil, an imperfect alternative are API GL-4+, SAE 75W-90 oils.

Known alternative (GL-4+), fully synthetic oils:

• Castrol Syntrans Transaxle 75W-90;
• Liqui Moly 4434;
• Mannol Basic Plus;
• Mogul Syntrans 75W-90;

Known alternative (GL-4+), semi synthetic oils:

• No known oils.

Do not use any transmission oil which has "API GL 4 / 5" or "API GL 5" mentioned anywhere on its packaging or in its brochures !!

Oils for the differentials (front and rear)

All front and rear differential models in Jimnys require the same transmission oil specifications: API GL-5, SAE 80W-90, hypoid. There are not many such transmission oils in the aftermarket.

Oil in the differentials should be changed regularly, even if your mechanic (or even your vehicle's user manual) suggest that there is no need to !

Known fully compatible mineral oils:

• Castrol EPX 80W-90;
• Eneos Super Multi Gear 80W-90;
• Gazprom G-Box Expert GL-5 80W-90;
• Mobil Mobilube HD Plus 80W-90;
  • Additional link;
• Ravenol EPX;

There are no known semi synthetic nor fully synthetic oils which are fully compatible with the required specifications, only mineral oils. However, using mineral oils appears to be OK for this application, as Suzuki has designed the differentials with this in mind. Just change the oil in them regularly as per the recommended replacement intervals, which are written in the wiki article "Regular maintenance consumables".

Detailed notes

• Engine and transmission oils can be of mineral composition, semi-synthetic or fully synthetic.
• There is no formal industry standard or classification for this, so generally any oil (for example: "5W-40 ACEA B3" engine oil) can either be mineral, semi-synthetic or fully synthetic. The only way to determine that is to read the description on oil's container, and one of these three should be written in plain English.
• Mineral oils should generally be avoided, as they are generally too much susceptible to many things and influences, and they loose their chemical and physical virtues relatively quickly during use.
  • The only exception to this rule is if your vehicle manufacturer specifies a specific oil viscosity, and only mineral oils are produced in that viscosity.
    • In that case, your choice of oil's composition is more or less pre-determined, as the manufacturer has already counted in that a mineral oil will be used. Just change it regularly.
• Fully synthetic oils should be used whenever a choice is possible, as they generally provide the most chemical and material virtues (depending on quality) and have the longest longevity.
• Semi synthetic oils are a very "moot" category, as there is no definition of what a "semi" really represents in terms or percentages or so.
  • In other words, an oil which is 95% mineral and only 5% synthetic is also called "semi synthetic", with equal rights for that "name" as an other oil which is 20% mineral and 80% synthetic.
  • This "vagueness" in definition is usually exploited in the industry.
  • With semi-synthetic oils, the only rough estimation of what percentage of a semi synthetic oil is really synthetic, is to compare its price with its competition.
    • Higher price should mean more synthetic compounds in it.
  • This is why only a fully synthetic oil is a "safe bet".

• It was written earlier that viscosity figures ("xW-y") of oil are not the only important parameters.
• With engine oils, equally important characteristic is the exact "ACEA" or "API" category of the oil, or the exact vehicle manufacturer's standard which the oil needs to conform to.
  • Either the ACEA classification, API classification or vehicle manufacturer's own classification will be specified for required engine oil in vehicle's owner's manual.
    • Examples: API SH, API SL, ACEA B3, ACEA C4, Mercedes-Benz 229.3, Renault RN0710, Volkswagen 505.00, etc.

• So, to properly choose a suitable engine oil, you need to watch out for three important parameters:
  1. Suitable viscosity (example: 5W-40);
  2. Suitable chemical characteristic classification (example: ACEA B3, API SL, Renault RN0710, etc.);
  3. After you find engine oils on offer which match the first two criteria, it's then your own choice to choose a mineral, semi synthetic or fully synthetic oil among them.

• With transmission oils (for the gearbox, transfer box and the differential), the other very important parameter (except the viscosity figures) is their API chemical classification.
• Using a transmission oil of wrong API classification can wreck the gears and other bits in your transmission!
• So, if the vehicle manufacturer has stated to use API GL-4 oil, make your best effort to adhere to that!
• The difficult part here is that API classifications are quite old and they have been poorly defined from technological viewpoint, so many oil manufacturers now produce "combined" or "enhanced" transmission oils which "exceed" the requirements of these classifications.
• The most common example is a transmission oil which is classified as "API GL-4/5" (non-standard, manufacturer's "classification").
  • This is quite absurd, as API GL-4 and API GL-5 classifications are by definition totally incompatible!
• The other common example is a "classification" called "API GL-4+" which does not exist in any official books.
  • Who knows what that "plus" represents!

• In summary, when choosing transmission oils, after selecting a suitable viscosity, make sure to select an exactly matching API classification.
  • Try to avoid any "enhanced" or "combined" classifications like "API GL-4+" or "API GL-4/5" etc.
    • In other words, if it says to use API GL-4 or if it says to use API GL-5, the safest decision is to use only precisely that one (no "+" or "combo" "APIs")!
• The problem is that proper API GL-4 oils (which Jimnys use for the gearbox and the transfer box) are becoming hard to find these days (as Jimnys were designed in the 20th century you know).
• One of tried and recommended API GL-4 transmission oils Ravenol TSG.

Those who are craving for some more knowledge about engine oils can get some of it at generic worldwide Wikipedia

Those who are craving for some more knowledge about transmission oils can get some of it at generic worldwide Wikipedia

Notes on engine oil filter and engine air filter

Quick advice

• There are numerous compatible aftermarket products available.
• Choose high quality products, especially engine oil filter and diesel fuel filter (for diesel Jimnys).
  • If you don't know what is good, then choose what is expensive!

Detailed notes

• Replace the engine oil filter whenever engine oil is being replaced.
• Engine oil filter quality is important!
  • Cheap, poor quality oil filters can cause 100 times more expensive damage than the amount of money saved when buying them.
• The difference between low quality and high quality engine oil filters is in the following:
  1. The total area of the filtering material;
  2. The porousness of the filtering material and for how long it stays proper as it gets dirty;
  3. The robustness of filter's casing;
  4. The robustness of the connection of the filtering material to the filter's casing;

• Engine air filter should be occasionally checked if it is dusty / dirty.
  • This is especially important if the vehicle is regularly driven on dusty roads.
• A dirty engine air filter can hinder engine's power, cause higher fuel consumption and even long term engine damage.
• Higher quality air filters should have more more filtering area and better porousness of the filtering material, which stays proper for a longer time as the filter gets dirty.

Notes about engine coolants

Quick advice

All Jimnys require the use of engine coolants with the following properties:

• Ethylene-glycol;
• Strictly silicate free;
• Preferably 2-EHA free;
• Preferably phosphated;
• If diluting a coolant concentrate with water, use of distilled water only;

Main notes to keep in mind:

• Engine coolant should be replaced regularly according to the factory specified time or mileage replacement interval (whichever happens first), no matter what your mechanic or anyone else suggests!
• A common misconception is that a used engine coolant is good as long as it still provides required freezing protection.
  • The reason why old coolant has to be regularly replaced despite that, is because engine coolants have special anti-corrosion additives which "wear off" after a certain mileage or time of use.
• Believe it or not, color of an engine coolant is irrelevant.
  • Color is just an "illustration" dye which is added in the factory to "guide" (in practice: mislead!!) customers!
    • Engine coolants of different colors can be mixed (believe it or not), but engine coolants of different chemistries must not!

Known fully compatible engine coolants (listed alphabetically):

1. Ford "Motocraft Speciality Green Engine Coolant"
   • What an imaginative name for a product ...
   • Product image
   • This is the same product as Mazda FL22 (Ford and Mazda mutually share(d) a lot of technology)
   • Its color is dark green
   • Product link (search for a product titled "Specialty Green Engine Coolant" near the bottom of that web page)
   • Additional link
   • Ford article code: WSS-M97B55-A
   • Pre-mixed (factory diluted with water) edition code: VC-10-A1
   • Concentrated edition code: VC-10-A2
2. Honda "Type 2" coolant
   • Not much is currently known about this coolant except that it is essentially quite similar (if not the same) as Mazda FL22.
3. Mazda FL22
   • Mazda P.N.: C122-CL-005 4X
   • Alternative Mazda P.N.: 0000-77-508E-20 (shortened P.N.: 77508E20);
   • Multiple product images and another product image
   • This is a pre-mixed (factory diluted with water) coolant
   • This is the same product as Ford "Motocraft Speciality Green Engine Coolant" (Ford and Mazda mutually share(d) a lot of technology)
   • Its color is dark green.
4. Nissan L250
   • Nissan P.N.: KE902-99934
   • This is concentrate coolant
5. Nissan L248
   • Nissan P.N.: KE902-99944 and/or KE902-99945
   • L248 is simply pre-mixed (factory diluted with water) edition of L250
6. Ravenol HJC;
7. Suzuki "LLC Super (Blue)"
   • What an imaginative name for a product ...
   • Suzuki P.N.: 990F0-59J44-EC1
   • Also sold under Suzuki's "Ecstar" sub-brand name
   • This is a pre-mixed (factory diluted with water) coolant
   • Product image 1 and Product image 2
8. Toyota "Super Long Life Coolant"
   • What an imaginative name for a product ...
   • Typical shortened name: Toyota SLLC
   • Toyota P.N.: 08889-80029
     • This P.N. might not be valid in all world regions;
   • Alternate P.N.: 08889-80029
     • This P.N. might not be valid in all world regions;
   • Its color is pink
   • Product image 1 and product image 2 and product image 3
9. Valvoline "Zerex Asian"
   • Valvoline P.N. 675130;
   • This product does not appear to be available in Europe, but it is available in USA;

If you can not find any of the coolant products listed above (or if you can find them, but find them too expensive), you can use one of the alternative products below. They are silicate-free, but they are not phosphated and most of them contain smaller or higher content of 2-EHA.

Known alternative engine coolants - conforming to BASF's standard G30:

• BASF's own Glysantin G30
  • Additional link
• Comma Xstream G30

Known alternative engine coolants - conforming to Volkswagen "G12+" standard (note: just one "plus") (also known as Volkswagen "TL-774-F" standard):

• Liqui Moly Liqui Moly KFS 12+
  • Liqui Moly article number 6934
  • Additional link
• Wurth 0892 3320015
• Ina BS Super
• Many others ....

Detailed notes

• The situation with suitable engine coolants is the most chaotic of all.
• In the simplest overall terms, just know that there is no common standard whatsoever about types and variants of engine coolants.
• Also be very much aware that a color of an engine coolant does not determine its type!
  • Determining engine coolant's type based on its color is like determining person's nationality based on their hair color!

• There are various types and private "standards" of engine coolants, and not all are suitable for just any engine!
• In the simplest terms, most Asian (Japanese, Korean, Chinese etc.) vehicle manufacturers use phosphate based engine coolants and they avoid silicate based coolants like poison. They also don't like the presence of a 2-EHA chemical in engine coolants.
  • On the other hand, most European vehicle manufacturers use silicate based engine coolants and avoid phosphate based coolants like a plague. Usage of 2-EHA is also common for European cars.'

• Finding a non silicated, 2-EHA free, phosphated engine coolant in Europe is like finding a pig in Teheran.
• Usually the only sources of phosphated, non silicated and 2-EHA free engine coolants in Europe are official service workshops of Japanese vehicle manufacturers, where you should be able to buy OEM Toyota, Mazda, Suzuki, Nissan etc. coolants.
  • As far as it is known, all Japanese vehicle manufacturers use the same basic chemistry composition for their engine coolants (non silicated, phosphated, 2-EHA free, usually HOAT).
    • This is because they all adhere to the "chemical school" of the main Japanese chemical conglomerate, the factory called CCI, which actually usually produces the coolants for them.
  • These OEM Japanese coolants can be quite expensive, or even hardly available.
    • Also, they are usually available only as a pre-diluted mix, which might not be suitable if you want to control a precise mix ratio with distilled water when replacing the coolant.
• The only known aftermarket non silicated, phosphated and 2-EHA free engine coolant in Europe is Ravenol HJC.
  • If you find out about others, please add that info here!

There are imperfect, but at least more or less compatible alternatives in Europe:

• German chemical mega factory BASF has their "standard" G30 which is both silicate and phosphate free, so is advertised as a universal formula for both Europe and Japan.
  • However, G30 contains 2-EHA.
  • German manufacturer Volkswagen also has a similar "standard" VW TL 774 F, which is also called G12+ (note: only one "plus"), which is also both silicate and phosphate free, but contains 2-EHA.

• Since your main goal is not to introduce silicates in the cooling system, both of these coolant types are at least not outright damaging to your Suzuki engine.
• The lack of phosphates might not be such a major issue, since both of these coolant types have other (organic) types of additives which should more or less make up for the lack of both silicates and phosphates.
• The presence of 2-EHA is definitely undesirable, but is still less of an issue when compared to the presence of silicates.

Examples of aftermarket coolants based on BASF G30:

• BASF's own Glysantin G30
• Comma Xstream G30

Examples of aftermarket coolants based on VW G12+ (VW TL 774 F) are plentiful and many.

• However, don't confuse them with G12++ type, which is quite a different type!
• Also, make certain that a G12+ coolant states to be silicate free on the product labeling.

And remember - color of an engine coolant is irrelevant!
But what is relevant is that you perform a thorough flush of the entire coolant system (radiator, expansion tank, engine block, heater core) with plenty of soft or demineralized water before pouring the new coolant in!

Those who are craving for some more knowledge about engine coolants can get some of it at generic worldwide Wikipedia

Notes on brake fluids

Quick advice

To be written ...

Detailed notes

• All Jimnys require brake fluids which comply to a rather old DOT-3 standard.
• However, DOT-4 standard has fully superseded the DOT-3 standard in the meantime.
  • So, if you can not find a DOT-3 brake fluid, it is completely safe and allowed to use any DOT-4 brake fluid (and even recommended).
    • The only major difference between DOT-3 and DOT-4 is that DOT-4 has a higher boiling point, so there is absolutely no reason not to use DOT-4 every time.
  • On the other hand, DOT-5 standard is completely incompatible with any other DOT standard, so do not use any DOT-5 brake fluid in a Jimny!
• DOT-3 and DOT-4 brake fluid compositions are not super advanced chemistry, so in general any manufacturer's DOT-3 or DOT-4 brake fluids should be of completely acceptable quality.

Those who are craving for some more knowledge about brake fluids can get some of it at generic worldwide Wikipedia

Notes on power steering fluid

Quick advice

To be written ...

Detailed notes

• Rarely any vehicle manufacturer specifies a replacement interval for a power steering fluid in a hydraulic power steering system, nor provides a procedure on how to drain it and refill it.
• Common experience from hydraulics mechanical engineers (people who design hydraulic systems in excavators, big trucks and other industrial machinery) is that there is rarely a need to replace a fluid in a hydraulic vehicle power steering system, as the fluid does not endure any high stress in such systems.
• The experience from vehicle mechanics says that the power steering fluid does not need changing even if it is old, until it starts to look dirty (dark-brown) compared to its strong cherry-red color when it is new.
  • When such discoloration becomes noticeable, only then should the power steering fluid be changed.
• The replacement procedure for power steering fluid depends on a vehicle, but it usually comes to some kind of improvisation.

Those who are craving for some more knowledge about powered steering systems and their fluids can get some of it at generic worldwide Wikipedia

The simplest and safest improvised power steering fluid replacement procedure is:

1. Buy 2-3 times more new fluid than the actual capacity of the system;
2. Perform partial drain of the old fluid from the power steering fluid reservoir with a suction tube;
3. Fill in some of the new fluid in the power steering fluid reservoir;
4. Turn the vehicle on;
5. Turn the front wheels completely left-right a couple of times;
   • It is advisable to use lift jacks to have both front wheels raised above the ground, for easier steering.
6. Turn the vehicle off;
7. Repeat steps 2-6 several times until the color of the fluid in the power steering fluid reservoir is the same as the color of the brand new power steering fluid;

---

Page last edited on 23/12/2018 by user Bosanek