What Does 75W90 Mean?

Can I use 80W 90 instead of 75w90?

If you have differential whine that is quieted by a thicker fluid, then 80W-90 might be a good option.

It will certainly be thicker than 75W-90 for most owners’ operating conditions in moderate climates.

You could also try 75W-110 for a thicker oil that performs better in the winter..

What is the best gear oil?

Best Sellers in Gear Oils#1. … Quicksilver 858064Q01 High Performance SAE 90 Gear Lube for Mercury Outboards and MerCruiser… … Polaris Premium Synthetic AGL Plus Gear Lube 32 oz / 946 ml. … Mobil 1 104361-UNIT 75W-90 Synthetic Gear Lube – 1 Quart. … Lucas Oil LUC10043 Oil SAE 80W-90 Heavy Duty Gear Oil – 1 Quart.More items…

What is the difference between SAE 90 and 80W90?

SAE 90 is a very large scale. 80W-90 is the low end of the scale, while 85W-90 is the high end of the scale. Both are single grade SAE 90 oils. SAE 75W-90, is more appropriate in most climates where 90 is specified, specially if it is a transmission.

What is the difference between 75 80 and 75 90 oil?

Doubt if it’s the oil, basicly the low number is how thick the oil is when cold and the high number when hot, so the 75/90 stays slightly thicker than the 75/80 when hot, but is the same when cold.

Is it OK to use 75w90 instead of 75w85?

Our answer: Yes, 75W-85 gear oil can most definitely be replaced by 75W-90. In fact, we know that some GM dealers will use 75W-90 gear lube in applications where Chevrolet/Buick/GMC/Cadillac suggests 75W-85.

What is 75w90?

Mobil Synthetic Gear Oil 75W-90 is a fully synthetic gear lubricant formulated from synthetic base oils and an advanced additive system. It is designed for use in many railway gearboxes and provides excellent load-carrying capability where extreme pressures and shock loading are expected.

What is 75W gear oil?

Mobil Gear Oil FE 75W is a high performance gear oil blended from high quality mineral base oils and an advanced additive system to meet Peugeot’s & Citroën’s specification. Mobil Gear Oil FE 75W is specially developed for PSA’s (Peugeot / Citroën) manual gearboxes with integrated differentials.

What’s thicker 75W90 or 75W140?

So, the difference between “75W90” and “75W140” is that at operating temperature, the 75W140 will be considerably thicker than the 75W90 but at room temperature they will be about the same viscosity.

Is Thicker gear oil better?

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. Low viscosity oils, on the other hand, are best for high speed systems with lower load.

Can you mix 75w90 and 75w140?

No Problem if the oils are the same brand.

How much gear oil goes in a rear end?

Use the highest-quality gear oil you can afford to fill the differential. The weight and capacity will be listed in your owner’s manual; your differential will usually hold as much as 3 quarts.

What is the thickest gear oil you can buy?

The SAE grading system indicates oil viscosity in simple numbers ranging from the thin oil (10) to the very thick oil (140 or above). Heavier weight, or higher grade oil is more viscous and therefore thicker as it flows between the gears. Light grade oil is ideal for small, fast, polished gears under a light load.

What kind of oil goes in the rear end?

Differential oil, sometimes referred to as gear oil, is found in the axle housing. It’s thicker than engine oil and is designed to perform under high pressure (gears mashing together, hydraulic nature of clutch packs) rather than high temperatures like engine oil.

Is 75w90 better than 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 use of 75W-90 gear oil is recognized by OEMs as a contributor to overall fuel economy.

Is 75W140 better than 75W90?

I think you’ve got your numbers backwards the 75W140 is the heavier (140 vs 90) and for more severe service. It is recommended only for the rear diff and only for heavy towing and continuous use. You shouldn’t go heavier than 75W90 in the front and for normal duty and occasional towing 75W90 is fine for the rear.

Can I use SAE 90 instead of 75w90?

Yes. 75w-90 should be just fine.

Can I use 80W90 instead of SAE 80?

Any of the 80W-XX gear oils will work just fine.

Which gear oil is thicker 80w 90 or 85w 140?

80w-90 front, 75w-140 rear. Rear gets more of a workout so more heat. This equates to thicker lubricant.