75W-90 works great in a Quickchange also. The consensus of opinion from
various gear companies I've talked to is DO NOT use synthetic lube on new
gear sets. After they have been broken in (which is much more than a 5
minute process) the synthetic works fine. I have run the Synthetic in my
4-speed for about 5 years now and am very happy with the low friction
results.
John Beckett
----- Original Message -----
From: <ardunbill@webtv.net>
To: "Dick J" <lsr_man@yahoo.com>; <land-speed@autox.team.net>
Sent: Thursday, November 09, 2000 4:41 PM
Subject: Re: Rear Ends
> Hi Dick, I'm using 75W-90 oil in my 9" Ford rear axle. It's lighter
> than 90, and I have to think it has less drag, especially since you
> can't really get the axle hot before you run. I believe Valvoline
> regular 75W-90 is perfectly adequate, and that the synthetic that costs
> twice as much, doesn't really do anything more. On the other hand, some
> racers swear by synthetic.
>
> Many years ago I read in a Hot Rod article, "It's what you believe that
> counts." How true that is.
> Cheers from ArdunBill in the Great Dismal Swamp, temperature was 70
> today, just right for motorcycling.
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