What oil do I use in my rear differential?
There are two types of differential fluid. One is mineral oil, which is a natural, crude oil-based fluid. The other is synthetic differential fluid, which is created in a lab.
What is gear oil for Mustang?
Royal Purple Max Gear 75w90 weight oil is recommended for use in 1979 to 2022 Mustangs and is compatible with other oils. Three (3) quarts of gear oil are required to fill a 8.8″ Ford rear end.
Is axle oil and gear oil the same?
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.
Is axle fluid the same as differential fluid?
In order to last, they need to be properly lubricated. Every front or rear axle is filled with a special oil (also called differential fluid, or gear oil) that takes care of this.
What oil is used in a limited slip differential?
Castrol Limited Slip 90 Gear Oil is mineral based gear oil for use as a limited slip differential oil where API GL-5 performance is required. Primarily recommended for use in limited slip differentials fitted to a wide range of Australian, America, Japanese, British and European vehicles.
Does Royal Purple gear oil have friction modifier?
Although Royal Purple has some friction modifiers in it, the Ford rear ends need a little bit more. This kit includes one bottle of friction modifier to provide smooth operation of clutch-type limited-slip differentials. The specially formulated additive eliminates rear-end chatter for quiet operation.
Is gear oil same as axle oil?
What weight gear oil should I use?
You can find the specified gear lube listed in the owner’s manual and, in general, this is the gear lube you should use. Look for a viscosity rating, like 75W-90, and a classification, such as GL-4 or GL-5. A classic error made by consumers is to buy thicker gear lube in order to get “better” protection.