: Rear axle fluid

02-16-05, 09:24 AM
Ok, my manual says its time to check my rear axle fluide. Since i will be down there, I was thinking about draining and replacing it. Has any one done it? Any pointer or recipe rather would be highly appreciated.

02-16-05, 09:45 PM
First drive the car for a few miles or two to warm the gear lube in the axle. If I recall, there’s a drain plug on the bottom of the housing that unscrews (with a hex) and drains it. Clean the drain plug off, and after the fluid drains put it back in (snugly) and proceed with filling...

To fill it, you could get a siphon gun or something with an attachment hose that fits into the check plug: http://www.tooldesk.com/products/productDetail.aspx+id+184
Or say a siphon gun too…

From there you fill up just to the bottom of the check plug valley with the appropriate gear lube. SAE 80W-90 GL-5 Axle Lubricant, GM P/N 12345977 or equivalent. You don’t need any additive since there isn’t a limited slip. Again, put the check plug back in snugly and you’re done.