scottylow

iTrader: (1)

So I have read a lot about the diff problems with the 04 and 05 V's and I want to at least keep up the maintenance as scheduled so I went to the dealer to ask what type of fluid the car recommends but all he could tell me is that it takes 75-90 and I think he said a quart and a half or so if I remember correctly(I know it was less than 2 qts.) My question is does it take synthetic or conventional and also he said it didn't require limited slip additive even though I know it has a limited slip diff. I read a thread a while back that said that GM didn't require limited slip additives but I don't understand how that could be possible. Any suggestions?

VforMe

http://www.cadillacfaq.com/faq/answe...ube/index.html

scottylow

iTrader: (1)

Thanks for the info....I figured it would be easy but wanted to make sure before I started... Thanks again.

Stepside

I use Valvoline, SYNpower, (Limited Slip)-Full Synthetic, 75-90W. ~ have No issues.

gearhead68

iTrader: (2)

You can use royal purple sold in most major chain parts stores. Meets spec and is cheaper. It already has the limited slip additive.

aurora40

iTrader: (1)

I don't think there's any real downside to using the GM grape-aid stuff?

Diff failures are usually the case itself cracking open. I don't think any fluid is better than another at preventing that from happening...