Join Date: Jul 2000
Location: southern new jersey
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Re: which gear oil to use? \"in Transfercase\"
I use nothing but royal purple synthenic gear lube in the tcase and rears in the cj. I have seen how good it works. The shop that does my welding and rears for me used it to put a rear together. They gave the rear to the owner and told them to put gear oil in it and break it in. Well they broke it in, drove for 5 miles, but never put oil in it. The only bearing to get any damage was the pinion bearing. After seeing that i was hooked. It is about 10 bucks a quart and if the seals and gaskets are old will leak like a waterfall for a while (until the oil softens the rubber and cork). It has been in the cj since feb. leaked until about june and i havent added any since then. This stuff is thin and very sticky. Good luck
80 cj7, 304, auto, 33" tsl swampers, 4" softride superlift