50k Service/Trans service

[pdxrealtor]

Just bought the external trans oil cooler.

I'm thinking it would be best to install that before the trans flush. Anyone have a different opinion?

[glennf1]

Definately switch to Dexron VI for the tranny & T-Case. It already has the newer anti-foaming spec, more shear stable, high temp stable, lower pour point, and the friction properties are MUCH better. My truck shifts like butter and the switch.

[pdxrealtor]

Dex 4 for the transfer case??

I already stuck redline D4 (dex 3 equivalent) in the TC

[pdxrealtor]

Well I've got most of it complete. Put the new shocks on yesterday. Getting the tranny service and corvette servo done tomorrow.

I'm still waiting on the stabilizer bracket but a side from that it's done.

Really glad I did it myself. Saved a lot of money, know its done right, and know my truck a little bit more.

Damn I want some long tubes and exhaust. And some heads and a cam, larger injectors.....

[glennf1]

Originally Posted by pdxrealtor

Dex 4 for the transfer case??

I already stuck redline D4 (dex 3 equivalent) in the TC

No you should have used Dex VI.

[pdxrealtor]

The manual does not say dex 4, it says dex 3 or the like with an H specification.

Haven't done any reading about others using dex 4 in the TC. But I did read about a lot of people who put Redline D4 in the TC. Also read about a couple people going back to the GM approved fluid due to the 4 wheel light coming on briefly.

You're the first to say dex 4. Care to elaborate for us?

[glennf1]

GM doesn't even license Dexron 3 anymore and was replaced by Dexron 6, a huge improvement over 3. 6 is backwards compatable with 3 and GM even put out a bulletin saying 6 should be used in place of 3. Not that the Redline D4 is bad, but the Redline D6 has a tighter viscosity limit and is more shear stable.