Which gear oil is best?
Top 7 Best 80w90 Gear Oils Review
- Lucas Heavy Duty Gear Oil. Lucas Oil came up with this excellently formulated gear oil in 2004. …
- Mobilube HD Plus 80w 90 Gear Oil. Mobilube’s HD Plus 80W 90 gear oil is a high-duty, high-performance lubricant formulated from high-performance base oils and an additive system.
- Sta-Lube GL – 5 Plus New Generation Limited Slip Gear Oil. …
Can You GL5 inplace of GL4?
You may consider the GL5 a GL4 gear oil equivalent, though on a larger scale. You can use it as a replacement for GL4 as they have similar qualities. Gl5 vs. GL6 is another crucial comparison point.
What is GL 4 gear oil?
The designation API GL-4 denotes lubricants intended for axles with spiral bevel gears operating under moderate to severe conditions of speed and load or axles with hypoid (see note)gears operating under moderate speeds and loads. These oils may be used in selected manual transmission and transaxle applications where MT-1 lubricants are unsuitable.
Is gear oil thicker than hydraulic oil?
Yes, the thinnest gear oil is still thicker than the thickest hydraulic oil, by a little bit. The average gear oil 90w, is quite a bit thicker than the average hydraulic oil 20w. 3 toxic foods for cats.
Is MT-90 a differential?
Is brass synchro oil safe?
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What does GL-4 mean in gear oil?
GL4 is an oil grade, meaning gear lubricant at grade 4. This four means it has a decent level of additives in sulfur and phosphorous that increases its extreme pressure. The oil is among the top in extreme pressure rating, second to the GL5 oil.
Can I use GL5 gear oil instead of GL4?
To conclude: GL-4 is suitable for hypoid gear service when they are under severe service but are without shock loading. GL-5 is suitable for hypoid gear service under severe service and shock loads and not for use in a gearbox.
What viscosity is GL-4?
Additional DetailsSAE Grade80W-90Flash Point (COC), °C (°F)248 (478)Pour Point, °C (°F)-32 (-26)Viscosity, BrookfieldcP @ -26°C850008 more rows
What is the GL rating on gear oil?
Gearbox oils are classified by the American Petroleum Institute using GL ratings. The higher an oil’s GL-rating, the more pressure can be sustained without any metal-to-metal contact taking place between transmission components.
Is it OK to use 75w90 instead of 75w85?
Our answer: Yes, 75W-85 gear oil can most definitely be replaced by 75W-90.
What does GL-5 mean on gear oil?
API GL-5 – Intended for heavily loaded gear sets with high sliding forces such as hypoid differentials. GL-5 lubricants contain high levels of extreme-pressure additives to provide protection under boundary lubrication conditions.
Can I use GL4 instead of gl3?
The difference between GL-3 and GL-4 is that GL-4 has a higher lubrication requirement spec than GL-3. And by that I mean there is equipment out there specially designed to test gear oils and simply put a GL-4 oil will sustain more load carrying capacity than GL-3. GL-4 will have more EP additives than GL-3.
What is the best 75w90 synthetic gear oil?
Top 10 Best 75w90 Gear Oil Reviews & Comparison#Product1Valvoline High Performance SAE 75W-90 Gear Oil 1 QT2Lucas Oil 10048 SAE 75W-90 Synthetic Transmission and Differential Lube – 1 Gallon3Valvoline SynPower SAE 75W-90 Full Synthetic Gear Oil 1 QT4Valvoline FlexFill Full Synthetic SAE 75W-90 Gear Oil 1 QT Pouch6 more rows
Is MT 90 The same as 75w90?
With redline, the MT-90 is specifically designed for transmissions. It contains additives which promote the functionality of syncro’s. The redline 75w-90 is a straight gear oil and doesn’t have the additive package to promote syncro engagement. Its primarily designed to be used in differentials.
What does GL mean in transmission fluid?
GEAR LUBRICANTGL is short for ” GEAR LUBRICANT” API has the following GL classifications: for Gear Oils – GL-1: Oil without EP additive.
Is all 80W 90 gear oil the same?
Uses. Since 75w90 and 80w90 gear oils differ in density and viscosity, they behave differently when placed in extreme conditions. This brings out the differences in their use.
What does GL 3 mean?
The designation API GL-3 denotes lubricants intended for manual transmissions operating under moderate to severe conditions and spiral-bevel axles operating under mild to moderate conditions of speed and load.
Is GL 5 Synthetic?
Bel-Ray® Synthetic GL-5 Gear Oil is designed to provide superb performance for automobiles, light and heavy duty trucks and various industrial equipment when API Service Classification GL-5 and/or MT-1 is specified. This product is formulated with synthetic base stocks that have outstanding thermal oxidation stability.
Is GL5 safe for brass?
Re: GL4 or GL5 for brass synchros It’s not a question of better, GL5 will damage your transmission. There are some GL5s on the market which claim to be yellow metal safe, but I wouldn’t trust them. Use GL4.
Can I use GL4 instead of gl3?
The difference between GL-3 and GL-4 is that GL-4 has a higher lubrication requirement spec than GL-3. And by that I mean there is equipment out there specially designed to test gear oils and simply put a GL-4 oil will sustain more load carrying capacity than GL-3. GL-4 will have more EP additives than GL-3.
Whats thicker 75w90 or 80w90?
SAE 75W-90 maintains a more consistent thickness, or viscosity, across a wide temperature range. It’s thicker when exposed to high heat and thinner under colder, wintry conditions than 80W-90.
The 6 Best Gear Lubricants for your Vehicle – Synthetic Oil Review
Mobil 1 Synthetic Gear Lube Ls 75W-90 Mobil 1 Synthetic Gear Lube Ls 75W-90 Is A Supreme Performance, Synthetic, Multi-Purpose, Sae 75W-90 Automotive Gear Lubricant Designed To Meet The Highest Level Of Performance Requirements Of Modern Passenger Vehicles In All Types Of Operating Conditions, Including Limited Slip Applications, As Well As Delivering Outstanding Power Transfer Performance
75W90 GL-5 Gear Oil – Red Line Synthetic Oil
Most popular Red Line gear oil, with thousands of applications for passenger cars, light trucks and racing vehicles ; Contains additional friction modifiers for suitability with clutch-type limited slip differentials – for most LSDs, no additional friction modifiers are required
Amazon.com: 75w-90 gl-4: Automotive
Red Line (50304) MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant – 1 Quart
Amazon.com: Red Line (50304) MT-90 75W-90 GL-4 Manual Transmission and …
Red Line Manual Transmission and Transaxle Lubricant . 75W90 GL-4 gear oil (similar to SAE 5W40/10W40 engine oil viscosity) Popular in Nissan, Mazda, Mitsubishi, VW/Audi, Lotus Elise/Exige, Toyota, Mendeola transmissions and Atlas transfer cases for Off Road
Is MT-90 a differential?
MT-LV, MTL, MT-85 & MT-90 are not for use in differentials with hypoid gears
Is brass synchro oil safe?
Safe for brass synchros, as it lacks the reactive sulfurs found in most GL-5 oils that cause damage. Satisfies the gear oil viscosity requirements of 75W90, 80W90, 90 and motor oil viscosities of SAE 40, 10W40 and 15W40.
What is gear oil?
Gear oils are a complex subject, but their varied uses are one of the driving forces of modern industry and infrastructure. Gears make the world go round, but without lubricants they’d exist only in passing.
What is universal gear oil?
These are usually termed as “universal” gear oils and while they can be used for industrial processes they often contain additives which can be detrimental to machinery.
Why do oil emulsions need to be removed from gears?
Low emulsion formation. Gear oils, more than almost any other commonly used oil, need to emulsify water in order for it to be removed from the gears. This means that oils which easily emulsify with water, as opposed to separating from it, are highly undesirable.
Why is it important to separate oil from water?
By separating from water, instead of allowing the liquid to emulsify within it, gear oils can rapidly address the problem to keep corrosion and oil oxidation to a minimum. This is much more important for industrial applications than in automotive ones for obvious reasons.
What is the best oil for gears?
As a general rule high viscosity oils are best for low speed, loaded gears with a rough surface. Higher viscosity provides a thicker film, higher wear resistance, and less deformation of the gears as time goes on.
How many grading systems are there for gear oil?
There are two separate grading systems for gear oils. For universal, or automotive, gear oils there are two sets of standards. Those which are destined for use in transmissions are graded according to SAE standards. You might, for instance, see 80W-90 gear oil or 75W-140 gear oils on the shelves.
Why is oil needed in gears?
Gears produce quite a bit of heat and friction as they work against each other, which means that an oil is pretty much necessary to avoid abrasive damage between the gears which will lead to the eventual degradation of a system.
What type of oil is used in a manual shift truck?
Universal Tractor Fluids are also used in transmissions and hydraulics in many brands of equipment. SAE 50 Engine Oil – While not strictly a “gear oil,” this type of lubricant is often the recommended lubricant for some manual-shift truck transmissions.
What is API GL-5?
API GL-5 – Intended for heavily loaded gear sets with high sliding forces such as hypoid differentials. GL-5 lubricants contain high levels of extreme-pressure additives to provide protection under boundary lubrication conditions. Common heavy duty applications include differentials in on-road and off-road trucks, differentials, final drives in Caterpillar scrapers, and differentials and planetaries in Euclid haul trucks. Some manual-shift transmissions can use GL-5, but typically should not be used in synchromesh-type transmissions, as the EP additives can be corrosive to yellow metals found in those transmission types. Limited-slip differentials also typically require a specific lubricant with a limited-slip additive.
What is universal tractor fluid?
Universal Tractor Fluids – This category goes by many specifications, such as John Deere J20C, Volvo WB-101, Case (IH) Hy-tran, Ford M2C-134A (and others), and is intended for axles and differentials in certain equipment that contain wet brakes. These fluids contain friction modifiers to reduce chatter in wet brakes, but should not be used in equipment that is designed for TO-4 fluids, as the friction modifiers that are used may negatively affect braking performance. Universal Tractor Fluids are also used in transmissions and hydraulics in many brands of equipment.
Can you substitute gear oil for another?
Different industry associations and different equipment manufacturers issue unique specifications. Most of the time, these specifications are not interchangeable. Substitutions of one type of gear oil for another can sometimes be done, but these substitutions can be tricky and you should use the guidance of a lubrication specialist to help you make the right decision.
Is gear oil the same as lubricant?
All gear lubricants are definitely not the same. There are differences in the additive technology used for lubricants for each specification, and just because one type of gear oil works well for one type of gear application, that doesn’t mean it will work well for all.
Can you use gear lubricant interchangeably?
Well, yes, they are all gear lubricants, but no, you can’t just use them interchangeably. Axles, differentials, final drives and other gear sets used in mobile equipment applications all require specific lubricants designed for the heavy loads and the sliding and rolling forces associated with the operation of gears.
What is the difference between GL-4 and GL-5 gear oil?
The main difference between GL-4 and GL-5 gear oils is the amount of EP additives. Sulphur/Phosphorus containing products are used as EP-additive. This additive has the purpose to prevent the occurrence of micro-welds on the gear flanks at the local high temperatures which prevail in EP circumstances (temperatures well in excess of 800℃!) GL-5 has roughly twice the amount of EP additives compared to GL-4, which is why it is often used in high-pressure circumstances such as in a front axle and rear axle differential.
What are the different classifications of transmission oil?
They are mainly important for the transport sector in North America, Africa and Asia. The active classifications are: GL-1. GL-4.
Why is it important to choose the right transmission oil?
Choosing the right classification is extremely important since they both have different properties and wrongful use could lead to serious damage to your vehicle. When you are choosing a transmission or gear oil you might be wondering what GL-4 and GL-5 mean and what the differences are between these two classifications. …
Can you use GL-5 in a gearbox?
Therefore it is not recommended to use GL-5 in a gearbox unless the manufacturer allows this. GL-4 is suitable for hypoid gear service when they are under severe service but are without shock loading. GL-5 is suitable for hypoid gear service under severe service and shock loads and not for use in a gearbox.
What gear oil has GL4?
I believe Lubro-Moly 75W-90 is another and that brand is available in NAPA stores around here. Coastal used to put GL4 on their label (along with MT-1 and other certifications). Of course, you can always go mail order with Amsoil and Red Line Oil gear oils, though they are a bit pricey … but you don’t need too much and don’t have to do this very often. Safest bet is to take your time and source a GL4.
Why was GL5 frowned upon?
GL5 was always frowned upon due to the “upgrades” made to it that elevated it over GL4.Synchros couldnt take the additives over the long haul.I dont know if any changes have been made to “tame” GL5,but I would frankly stick with something like Redline manual trans fluid thats rated proper.
Does GL-4 bond to bras?
This additive provides a stronger EP bond and it tends to bond to bras so strongly that it is ripped away (synchronizers) and caries brass away with it. It claims that much higher levels of brass are seen in Trannies that require GL-4 and use GL-5. Probably prudence says to go with GL-4 if it is specified.
Is GL-4 an API?
GL-4+ is not an official API category. GL-5 and GL-4 can be met with the same formulation. ASTM D130 for GL-4 is not all that strict, I think it’s a 3a or 3b. Modern GL-5s beat that easy so there is no real guarantee one is safer than the other. GL-4 can also be formulated with typical Sulphur/Phosphorous EP additive or non-sulphur based AW additive. The latter would be fine even in a GL-1 application. I would look for a GL-4 that is also recommended where GL-3, engine oil or straight mineral oil is recommended.
Can you use GL-5 on Motul?
You don’t want to use GL-5 rated products in applications where yellow metals are present. The extra sulfur required for GL-5 EP performance is corrosive to them. I find it a little odd that Motul claims GL-4 and GL-5 performance on the same product. My understanding was that the specs were mutually exclusive.
Does GL4 oil have competition?
If you watch the video (I have shared the link in a post above) that’s what the guy also claims. The production of new GL4 oils has increased competition between companies and they produce higher quality formulas, at least that’s what the guy says.
Does a Gl5 transmission hurt a Gl4?
I’m not big on the gl5 hurts a gl4 transmission deal but in my own experience gl4 specific fluids in a gl4 transmission shift better than gl5 fluids in the same transmissions, boutique brands or not.
Is MT-90 a differential?
MT-LV, MTL, MT-85 & MT-90 are not for use in differentials with hypoid gears
Is brass synchro oil safe?
Safe for brass synchros, as it lacks the reactive sulfurs found in most GL-5 oils that cause damage. Satisfies the gear oil viscosity requirements of 75W90, 80W90, 90 and motor oil viscosities of SAE 40, 10W40 and 15W40.
