Can you use 75W-90 Synthetic gear oil?
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.
Is synthetic gear oil better than regular gear oil?
Synthetic lubricants have a lower friction coefficient in a gearbox, better film strength and a better relationship between viscosity and temperature (viscosity index, VI). This indicates synthetic lubricants can be used at lower viscosity grades and lower temperatures.
What is 75W90 gear oil used for?
The 75W-90 gear oil is used under extreme pressure conditions and is recommended for limited-slip differentials and for use in colder climates. Used in heavy duty manual transmissions, final drives and axles, high temperatures will not effect the heavy film left by this oil.
What is the difference between 75W90 and 80W90 gear oil?
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.
Can I use 75w90 instead of 75W?
Our answer: Yes, 75W-85 gear oil can most definitely be replaced by 75W-90.
Can I use 75w90 synthetic instead of 80w90?
Ans: Yes, you can mix 75w90 with 80w90.
What are the disadvantages of synthetic oil?
| Advantages and Disadvantages of Synthetic Oil | |
|---|---|
| Advantages | Disadvantages |
| Resistant to oxidation and chemical degradation | More expensive |
| Withstands temperature extremes better (cold and hot) | Possible additive precipitation/separation |
| Flows better at cold temperatures | Slightly lower fuel economy at highway speed |