I have my C 8.25 and i am changing the oil and wanted to know if any one had any suggestions for the oil brand

 

if you beat the trucck go with a high performance that meets oem specs

 

Don't think there is a recommended brand of gear oil (plenty of good brands to choose from), just use 75W90 GL5 or 75W140 (heavy towing) GL5 viscosity gear oil.

 

yeah i think in going to go with a the castrol 75w90

 

 

rhino spit... hard to get though

http://www.4x4xplor.com/diff-service.html

 

Rhino spit is garbage. Unicorn blood adds 10 hp...

 

Mobil 1 good? How often does the front axle lube need changing and the center diff? My '99 Cherokee is stock.

 

as long as it's 75w90 GL5 you'll be fine. I would go with a synthetic lube though for longevity though, especially if you wheel it.

 

I just did mine with Valvoline 75-140 and it seemed to remove a slight hum that was in the rear end. I did the front with 75-90. Both synthetic.

 

Exxon/Mobil is one of the major oil/lube brands so it's probably good.....the main issue is to choose the correct vis/weight GL5 gear oil refined/sold by a well known/name brand. If there was such a thing as "best brand" of whatever (highly subjective), then everyone would buy that "best brand" and other brands would go out of business. Owners manual is the best source for fluid change intervals.

 

Good stuff.

 

is that brand's motto really "better than it has to be" ?

 

I use great white shark semen. Haven't had to change mine in over 400k miles and I drove it straight up mount everest. But Mobil 1 is good too

 

^^haha