Can you mix differential fluid

Gear oil is thick high viscosity , heavy oil that is used to reduce friction, heat transfer and corrosion in units containing gears. Manmade or synthetic gear oils reduce engine wear and can be pumped to critical surfaces faster than regular, mineral petroleum-based oils. There are essentially two different types of synthetic gear oil, polyalphaolefin poly-alpha-olefin , or PAO and polyalkylene glycol, or PAG.

Can I mix Gear Oil..? Post Reply. I checked my Diffs today and the rear is fine, but the front I cannot touch the oil The stores do not have it I found Valvoline. Why not have them top it off. Bennett , Apr 16, I wouldn't waste your money on synthetic for the differentials.

PSU Taco85 , Apr 16, These oils may be used in selected manual transmission and transaxle applications. New Member. If you tow a lot, the 75w is what you would use. For towing only once in a while go with the 75w They are basically spiral bevel gears, where the pinion engages below the centerline of the ring gear. This lowers the driveshaft away from the bottom of the vehicle.

Hypoid gear oil is formulated with extreme-pressure EP additives to protect and operate effectively with hypoid gears. SAE 75W maintains a more consistent thickness, or viscosity, across a wide temperature range. The use of 75W gear oil is recognized by OEMs as a contributor to overall fuel economy. Technical Supremo, Platinum Member. Either one is fine. Generally the synthetic 75w is for HD applications such as towing, but it will work fine in any application. Monograde gear oils are designated by one number 70, 90, , , etc.

The number indicates a level of the oil viscosity at a particular temperature. The higher the grade number, the higher the oil viscosity. They provide superior lubricity which means less wear caused by friction and improved gear protection at extreme temperatures. This is within a range of The higher the number, the more viscous the oil is. SAE class gear oil is considered to be one of the thickest oils used in passenger cars. Begin typing your search term above and press enter to search.

Press ESC to cancel. Skip to content Home Resume What weight diff oil should I use? Ben Davis June 2, What weight diff oil should I use? Is RC diff oil the same as shock oil? How much gear oil goes in a differential? What kind of oil goes in a differential? What is the best differential gear oil? Is 80W the same as SAE 90? Can I use 75W90 instead of 80w90?