beaSSt

When I got my install instructions from Strange for my 3.73 R&P they told me that they don't recommend synthetic gear oil.

Anyone know why?

Anyone here running Strange gears -- what do you use?

VaderWS6

I run Strange 4.10's in my m6 with Royal Purple synthetic. No problems so far. I never saw where they say not to use syn.

BudH

iTrader: (3)

Depends on the Differential used, not the gears!

beaSSt

Actually Strange Tech support told me directly not to use synthetic with their gear set.

This is from their email:

"We do not recommend synthetics. We do not feel that synthetic fluid gives adequate protection between the gears."

chicane

Well..... I agree.

I have been saying this for years, but, my reasoning is that synthetics dont have the shock loading prinicipals that is mandatory in helical cut, hypoid type gear applications. The only way to improve the shock loading properties in a synthetic, is to use/add some Lucas (syn) oil stabilizer.

Other than that.... I will never use a full syn in a differential just from the years of experience with and actually seeing the results myself.

SScam68

iTrader: (20)

I'm using non-syth., according to their recommendations.

INMY01TA

iTrader: (1)

I use any non-syn 80/90 gear oil. Strane, Moser, and Eaton all say not to use syn fluid and its just not nesisary. I put some Redline syn in my old 10 bolt a long time ago and got one wheel burnouts.