i am going to do my rear oil soon and i read in the gear section and i'm all confused

is running RP gear oil good? and how many qts does it take, 3?
the dealer recommends running gm gear oil with LSD additive?


if i run RP, will i need the additive?

i ask here cuz we here out in the west **cough** CALI**cough** are the best.

FYI i have a G80 - LIMITED SLIP TORSEN REAR DIFFERENTIAL btw

 

i have allways liked the rp gear oil and if you get the ones that say it has limited slip additive, then you wont have to get the additive seprate
and btw if you have a torson rear you dont need the additive anyways!!

 

royal purple man! buy 2 quarts! and no need for the additive the RP already has it in there and get 75-90

 

80 90!!

 

i have 50 k on the clock btw

 

how many qts, ara says two but my bro says 3

 

when your auburn doesn't work anymore, you don't have to put additive either. 142k mile

I used Castrol 80w-90

 

i garentee its 2 quorts man! trust me i did it my self it even took a little less then 2! even if your short i got a spare quort

 

NO JOKE. someone told me 4, so i tried to fit 3. didn't stop flowing out. 2 MAXX!!!!!!!

 

4 in the tranny and 2.5 in the rear, thats if you get it all out, best way is to do it hot,

and i would use rp, i just used it and noticed a significantly smoother shifts

 

I should probly do this to... when does it need to be changed anyways? every year? every certain miles?

 

if you have the auborn it must be changed sooner to keep the clutches fresh! and how the hell u fit 2.5 qts??? u sure your diff was level when you did this?? and the best way to do this is to remove the 10 bolts holding on the cover and you might as well clean the magnet that always collects metel! and you will also need a new gasket and some silicone to hold it in place too!

 

I have an 01 and after my gear swap I'm using Torco RGO 85W-140.

Can a honky get a table dance?

 

I've been meaning to ask this question, I have to do this to mine too.
2 quarts of Royal Purple it is.

 

I'm using the OEM stuff w/ the additive. Expensive as hell but hey, the parts look brand new with NO metal flakes back there ... must be those 1337 2.2 sec. 60's...

 

I run the thick natural ****. 90-140 or something like that.

 

And it quieted my Motive gears, which were humming from 45-60.

 

Red Line 75-140 Syn

 

lol, funny you ask, the place that did my exhaust also did some tranny work and such, so i asked while you had it up how much do change the oil, he said 40, so i gave him all my oil, he dumped the trans and the rear, i brought him 3 quarts of the max gear oil, i got back nothing, i asked him where the other quart was he said it damn there took the whole bottle, i said alright but im pretty sure you didnt do it right then, he remarked with i have been doing this since before youw were born yatta yatta, i just laughed and left, went home checked the level it was good, so if my extra bottle was ripped off then i guess i know where not to take my car ya know

 

Ya your bottle got ripped, and hes been doing it to people since before you were born. Cuz i have the 8.5" and all i could fit was 2, i put 3 in it, and 1 entire quart went down the drain. i wasted like $10 right there.