ozziesironmanoffroad

i just got back from jiffy lube, had my tranny flushed and my diff flushed. boss wouldnt let me do it at work, and i dont have the tools here. however, they told me that synthetic 75-90w or whatever synthetic gear oil is REQUIRED for it to operate. is this true? if so, then they were honest to me, if not, they just lost a customer, they charged me an extra 35 bucks for the oil. can anyone help?

TORTIS

iTrader: (1)

Marlin told me 75-90 gl5 gear oil. i run castrol. some people swear by syn.

CJM

Its jiffy lube, they were trying to sell you stuff.

Plain old oil is fine.

RustBucket

iTrader: (1)

Umm yeah regular dino oil is fine...

MudHippy

ABSOLUTELY NOT TRUE. It's o.k. to use it, but it's NOT REQUIRED.

API GL-4 or GL-5(GL-4 preferably)
SAE 75W-90

http://personal.utulsa.edu/~nathan-b...21lubrican.pdf

ozziesironmanoffroad

thats what i thought. and no refunds eh... oh well. theyve lost a customer.

CoedNaked

Use GL-4 gear lube in your manual transmission. Use GL5 for your transfer case and front/rear diffs.

ozziesironmanoffroad

yeah. oh well, looks like im stuck with this synthetic stuff for 30,000 miles, i dont think jiffy lube does refunds... though i plan to tell the manager that hes an a.... something thats colorful, but i cannot say on here. and im going to tell him if he doesnt refund the 30 dollars he screwed me out of, he has lost a customer. i know one customer doesnt sound like much, but still, greed factor might work.

bob200587

While not required, I would at least use synthetic in transmissions, and transfer cases.

I'd do it in the diffs to, if you have breathers. Otherwise, you'll probably ruin expensive oil often.