Oil/Fluids?

[Smasal]

Doing these tonight....going shopping now. Recommendations? My engine only has 12k on it but the tahoe has 127k on it? This affect what oil I should use?

Transfer Case?

Oil?

Rear and Front Diff?

 

[SunlitComet]

Need to know what kind of 4x4 system you have for the tcase and front diffy.

Engine: Mobile1 synthetic and a K&N filter.

Rear can use gl-5 80w-90

 

[Smasal]

I have 4x4 with the auto, 2wd, 4hi, 4lo


Ch@d

 

[SunlitComet]

Autotrac 2 fluid (looks blue) for t-case.
Synthetic 75w-90 for front diffy.

 

[Smasal]

Oreillys told me to use a limited slip additive in the rear diffy?


Ch@d

 

[Smasal]

Sunlit? Bump


Ch@d

 

[SunlitComet]

Why?

---------- Post added at 01:05 PM ---------- Previous post was at 01:04 PM ----------

do you have a locker of some sort and if so what kind?

 

[Smasal]

I don't think I have a locker. I posted a pic of my sticker that's in my glove box in a different thread. And couple guys told me I had limited slip and 3.73's. But I'm not entirely sure. He said he pulled up what I needed and it says I need this limited slip additive or it will chirp and shutter on me in the back. And could tear up my gears.


Ch@d

 

[SunlitComet]

Based on YOUR VIN, you have 3.73 gear ratio with an open differential so unless you have other proof like paperwork or a visual inspection of the differential yourself stick with the gl-5 fluid and tell the Oreilly to stuff it. Or give me the number and I will. But get your fluid first then I will call.

and for below you have a gmt400/K10706 model unit:

 

[Smasal]

Nice. There are actually 5 locations within 20 miles of me and this is the one I never go to unless I know what I need/want. So I got the oil already. I'll return the additive. Thanks again man. No need to call. I like confrontation. Don't work somewhere if you don't know your information.


Ch@d