Question Regarding Diff Fluid Change..

[oak510_tahoe]

I was planning on changing my rear diff oil to RP. However is there some sort of additive I have to use? or can I use the RP 75/90 fluid on its own? Did a search and wasn't quite clear on that, Thanks.


FYI: this is for a 05 4x4 Tahoe.

 

[tybardy]

i am curious about this as well... i want to swap to RP all the way around

 

[BOSS]

RP = Royal Purple?

BOSS

 

[oak510_tahoe]

yeah, I ended up just doing the rear diff for now with Royal Purple; dam thing took 3.5 qts! Didn't expect it to be that much. Truck seems to be a bit smoother, but it could all just be in my head; I also did an oil change at the same time; so maybe a combo of the two. Planning on doing the Transmission soon too, switching it to RP probably. Just need to work out the issue with the 4 wheel drive not working.

 

[dec322]

I'm going to be doing this within the next couple of weeks?

Side question: Did the differential fluid stink? I changed it in my old mustang and got it all over my clothes. I ended up having to throw the clothes away because the smell was all over me.

 

[oak510_tahoe]

yeah the old stuff smelled bad. Not sure if the previous owner even bothered to change the fluid.

 

[Man Van]

Gear fluid in general smells like crap. However comparing it to supercharger oil it smells like roses. S/C oil stinks so bad it will stain your skin with the foulest smell for days.


Just a FYI-RP diff fluid will also help keep the temps down. Most failures are due to excessive heat over time.

 

[OKLAGMCRUISER]

guys on denalitrucks swear by schaefers over rp in their diffs.

 

[DESIGN]

can anyone walk me through a diff fluid change? Do you have to remove the cover or is there an easier way?

I'm surre if I had bothered to search here or GMFS a little I could come up with something but it just now crossed my mind.

 

[CincinnatiZ]

A little off topic but has anyone gone with a bigger dif cover like a TA? I know a lot of the 4 wheeling guys do it for looks, but the TA cover holds more fluid and is supposed to be stronger. I think there about $140 and they look sharp.

http://cgi.ebay.com/ebaymotors/TA-A...TruckQ5fPartsQ5fAccessoriesQQsalenotsupported