Corrosion inside rear differential?

cozdude said:
i let it sit when i pull the cover off. there thends to be some residual oil left over that i let drip out and then i spray it down with the brake cleaner, let it sit, then paper towel out the extra oil, cover up and refill. takes me about and hour to do one diff because of me sitting and letting it drip and dry a bit.
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Yeah that's probably not long enough to cause any corrosion or rust to set in. Believe the OP was leaving the cover off for a lot longer.
 
JeepKeeper said:
Yeah that's probably not long enough to cause any corrosion or rust to set in. Believe the OP was leaving the cover off for a lot longer.
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sorry i should clarify. when i did my last oil change (the time i took this pic) i left the cover off for over two hours. this was taken after the two hours. i work from home and got stuck in a few meetings and forgot about it lol. i normally try to shoot for the hour time i previously mentioned
 
Thanks for all the input. I got home and the diff looked the exact same - no extra rust...but then again, it's very dry down here right now. I should have my new diff cover today.
In the future I'll probably do a light wipe down with brake cleaner and hope for the best. I think that some water got in due to the small distrupted section on my diff cover. Using a better RTV (The Right Stuff) will hopefully help too. Hopefully it won't be an issue in the future.

Again, thanks everyone for weighing in.
 
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