What grade Royal Purple do you use if your going to use it in the tranny/tranfercase, and rear diff?

Also has anyone had any luck with this route as far as the notchy feel of the shifter going away after putting this stuff in?


Thanks

 

Well at the moment I am still contemplating on using Royal purple. But when I do, I pass the word.

 

I was told just 75w-90 for everything using royal purple?

Is this the case, anyone????????

Thanks

 

yes you are correct, 75W/90

I have it on my 7 and will not use anything else.
Mobil 1 for the engine, Royal Purple fot the drivetrain.


That's the winning combo


Enrique
Royal Purple
Panama

 

WOW, so thats it 75W/90 all through the drivetrain. Can that be correct?

 

thats what it says in my manual

 

Thanks, Im going to give it a shot next week, and see if it does anything for my clunky/clanky shifts.

 

yeah lets us know...i wanna do the same

 

I think the Tranny itself uses GL-4 rated and the Transfer and Diff uses GL-5.

 

Got mine done the other day, and it is still very notchy. Royal Purple gl-5 throuhout. It even feels a little more notchy.

Is the red line a gl-4 for the tranny? Maybe the royal purple is too slippery?

 

people haev been saying redline is doing wonders...i bought redline and i am going to do the change this weekend... MT90 for the tranny and 75w90 for the diffs

 

Redline MT90 is GL-4, Redline 75w90 is GL-5.

I think the Tranny needs GL4 for more friction due to the fact that its an AWD car. Don't quote me though...just don't feel like doing a search right now. It has been stated numerous times however here on the forums to use GL-4 on the Transmission and GL-5 on the Transfer and Diff.

I don't have a shop manual, but does anyone know the EXACT quantity of oil used for all 3 in the drivetrain?

 

GL-4 For more friction for the syncors. (I know spelling)

 

http://www.redlineoil.com/whyredline.htm

a nice read... check the individual products for more...

 

Im gettting mine changed to Red line,,,,,, see if that dose anything.