What did you use in your tranny?

what works and what doesn't?

I'm asking HIIC since reading the other threads that cover this issue just confuse the hell out of me.

Jon

 

Bleh...I went to Jiffy Lube for the Tranny...so they must've used OEM Dino based fluids.

For the Rear Diff I've got a couple of bottles of Redline waiting for my lazy azz to put them in.

 

Used 75w-90 valvoline dino oil + GM syncomesh.

 

i've been using amsoil 75w90 syn for the tranny and rear diff since 10k. i've just did my 30k with the same stuff. got it from auto plus parts in waipahu for like $7.40 a quart. no problems with it at all for shifting or grinding. the fluid coming out during the change looked pretty much like when it went in 20k miles ago.

 

I used 75w-90 Royal Purple Synth...from Napa Autoparts. Works like a charm

 

i like some redline shockproof super light in the trans and just dyno 75-90 if the rear end

 

redline MT-90. bascially a 75w-90 oil.