What is SAE 80?

These gear oils are labeled “multigrade” by the SAE, which provides a rating for the oil’s low- and high-temperature viscosity. For instance, SAE 80W-90 gear oil has a low-temperature rating of 80 and a high-temperature rating of 90.

Is SAE 80 the same as 80w90?

It just thins less than a straight 80w would, ending up as thick as a 90w would be when warm. Unless there’s some unusual reason your ATV must have straight weight, 70w-80 would be the way to go. Then it will be the proper viscosity when warm. Since it’s a hypoid gear application be sure that you use a hypoid gear oil.

What is the viscosity of SAE 80?

Automotive Lubricant Viscosity Grades: Gear Oils – Excerpt SAE J 306, 1998

What is gear oil viscosity?

The viscosity for a gear lubricant is primarily chosen to provide a desired film thickness between interacting surfaces at a given speed and load. Because it is difficult to determine the load for most viscosity selection methods, the load is assumed and the determining factor becomes speed.

What would be an example of SAE rating?

In other words, a SAE 30 motor oil is the same viscosity as a 10w-30 or 5W-30 at 210° (100° C). For example, 5W-30 motor oil performs like a SAE 5 motor oil would perform at the cold temperature specified, but still has the SAE 30 viscosity at 210° F (100° C) which is engine operating temperature.

Is EP90 the same as SAE 90?

When it comes to Gearbox oils, many older vehicles specified EP80 or EP90 weight oils. An SAE 90 gearbox oil is roughly the same viscosity as an SAE 50 engine oil. Most manufacturers now offer EP80W/90 oils in place of both EP80 and EP90.

Can you use 80W90 instead of 75w90?

Ans: Yes, you can mix 75w90 with 80w90.

What does EP 90 mean?

80W90 is a multiviscosity version of the single-viscosity 90 gear oil; it’s the same concept as 10W30 motor oil being the multiviscosity version of single-viscosity 30-weight motor oil. The “W” is a “winter” rating, meaning that the oil in question is designed to be usable in winter months in cold climates.

What is the difference between SAE 90 and 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.

What is the difference between 75 90 and 75W-140 gear oil?

A 75W-90 will be thinner at higher oil temperatures than a 75W-140. Both are the same thickness at lower oil temperatures. The 75W-140 is said to have a wider viscosity range – when more accurately it would be a wider temperature range.

What is the difference between SAE and API?

SAE is the Society Of Automotive Engineers (USA). The SAE rating of an oil is a measure of its viscosity (eg 20W50). API is the American Petroleum Institute. The API rating of an engine oil covers the performance rating of the oil (e.g. SM for petrol, CF for diesel).