LT4 differential lube change

[rgordon]

A friend advised me to change the rear end lube on my '96. Do you have to siphon the old lube out or is there a way to drain it? Thanks

 

[toptechx6]

A friend advised me to change the rear end lube on my '96. Do you have to siphon the old lube out or is there a way to drain it? Thanks

The General was too cheap to provide a drain plug so most people pump the old lube out with a small hand pump, however it is not difficult to install a drain plug and it makes future service a breeze. See the link below, my post #4 shows what it required.

2 rear end questions - Corvette Forum

 

[eltee4]

This has my interest too as I feel I want to change out the fluid soon. Where would I be able to siphon the fluid out if I did not opt to install the drain plug? Also wouldn't you want to install a fill plug too? If so where would yo urecommend it. I am open to any and all ideas.
Thanks

 

[Roadster Guy]

Try this maybe...
http://www.parts123.com/parts123/yb...~S2R51BBGX121616883550e~Z5Z5Z5~Z5Z5Z50000050F
RG

 

[eltee4]

Thanks for the info.

 

[trourke162]

If you put a drain plug in then you still need a hand pump to put fluids back in. And most gear lubes today are syn. so you don't have to change them. Maybe way back in 96 they were syn. I thought I read that some where.

 

[wickedlt4ce]

Just pump it out. You can find gear lube pumps at all auto parts stores...then use that same pump to refill the diff.