Thread: Rear gear oil
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Old 11-15-2018, 10:56 PM   #5
NoleFan4Ever
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Join Date: Sep 2011
Location: Florida
Posts: 17,477
Default Re: Rear gear oil

Ha! One of my biggest peeves over the years - Lol!

Rear End Lube Change:
-22oz's of 85w/90 synthetic rear end grease. Mobil 1 or any good quality type will work fine.
-Jack it up, pull the fill plug which is up the side of the housing. Then pull the drain plug and drain. (check oil for any foreign material)
-Reinstall the drain plug, stick your manual $8 lube pump tube (from Advance Auto Parts) in the fill hole (do not attempt to use the vent hole), lower the cart back level and pump it until it reaches the threads of the fill hole. (22 ounces + or - will get you there)

If you cannot get 85w/90, 80w/90 will work, but the viscosity is different. Engine oils, compared to gear oils, usually have lower viscosity when cold. They contain more detergent additives and require higher temperatures to burn. They are designed to protect engines from damage caused by solids and acids formed in combustion. Gear oils usually have more additives to prevent wear at extreme pressures and are often available in formulations for various compatibilities. Basically, it comes down to the base oil and additive pack. 30w engine oil will work, but it is "engine" oil and when CC designed their Graziano specs, it was a cart that was only going to run ~14 mph and around a golf course (and honestly, at those speeds and loading, you could run Wesson Oil or Castor Oil and be fine). I would venture to say there is a very small percentage of us on this site that still have carts running on golf course at ~14 mph. We have them lifted, or loaded, or pulling, or speeding, or hauling, or deer chasing, or.....
And with BIGGER motors, controllers, tires, gears, accessories, # of passengers, etc. etc. will relate to excessive loading on the gears/bearings and for all these reasons, put "Gear Lube" in gear cases and engine oil in Engines....

Just my highly experienced AGMA Certified Gear opinion....

PS- I am attaching viscosity chart for your review.
Attached Images
File Type: jpg Oil Viscosity Chart.jpg (290.3 KB, 0 views)
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