Diff Fluid and Tranny Fluid

[jagan323]

Hey Guys,

I'm planning to do my first Tranny and Differential Fluid change. I know the tranny fluid change requires some sort of fluid pump. However, does the differential need it?

Also, anyone know what kind of pump I need to look for? Name of the pump, and recommended brands =D

Thanks guys!

[khabboub]

i know that you can just run a tube (i think 4 feet is long enough) from the engine compartment to the transmission fill up plug. thats what i plan on doing.

and i know that for the diff oil you need some sort of lubricant additive, but does it need to be added for the tranny oil as well?

and one more thing, i know that the lubricant additive already comes in some of the mobil 1 diff oils. the ones that are marked with LS i think...... I THINK!!!!!!!!

oh and to answer your last question i did my diff oil change a while back. no you do not need the pump, the diff oil bottle will fit in the whole, you just have to hold it for a bit and squeeze it a bunch.

[jagan323]

You also have the Manual Differential.. I dont think the Auto V6 needs the lubricant additive. But thanks for your help.

[khabboub]

ooh sorry, yeah i have the M6 V6

[Orange Krate]

How many miles on the fluid? Manual vs Automatic makes a difference. Rear differential? Keep in mind there is talk about that NOT using the recommended manufacturers OE gear oil etc may void warranty. Many of the folks in the forums are switching over to Royal Purple and claim their manual trans and differentials are much quieter and smoother with power gains. I am using the Royal Purple oil and oil filter and notice a power increase. I am holding on the Royal Purple change in the transmission and rear diff until the questions about the notchy transmission and grinding gear issues are resolved.

[JKLNHYD]

I did Royal Purple for the trans and can confirm I have never had a problem not shifting smoothly. And I drive my 2LT hard! I have used it for many other previous applications prior to owning my Camaro as well...

[jtzako]

Originally Posted by jagan323

You also have the Manual Differential.. I dont think the Auto V6 needs the lubricant additive. But thanks for your help.

The auto differential does need the additive (not the tranny itself)

And FWIW, if you use the Mobile 1 rear Diff fluid that has additive in it, you still need to add additive.. otherwise it will make quite a lot of noise.

[Blackhawk6]

Originally Posted by JKLNHYD

I did Royal Purple for the trans and can confirm I have never had a problem not shifting smoothly. And I drive my 2LT hard! I have used it for many other previous applications prior to owning my Camaro as well...

+1

[jagan323]

cool guys. But any ideas about where I can get the pump for the tranny?

Thanks

[jagan323]

Originally Posted by jtzako

The auto differential does need the additive (not the tranny itself)

And FWIW, if you use the Mobile 1 rear Diff fluid that has additive in it, you still need to add additive.. otherwise it will make quite a lot of noise.

I just called GM for the parts... and they didn't mention that the auto rear diff needs an addidtive. Are you sure? Theres also no mention in the Users Manual.

[CyberDan]

I've searched but can't seem to find a clear definite answer.

I've got a automatic ss, I'm looking to Chang my diff oil but what lubricant should I use that's not going to void my warranty? What oil is in the differential to begin with?

Thanks for any help

[jagan323]

Auto SS? You have limited slip diff... which will be a different oil than the one I used for sure. In your owners manual, it TELLS you exactly what you need for ur rear diff. Lots of ppl tell u to go different brands, but the best way to keep your warranty is to use GM oils. I got mine at the dealership... they even tell u what you need, if u just give them ur make and model =) If you want to DIY, you can go here:

http://spadesv6.blogspot.com/2011/03...ntial-oil.html

Goodluck =)