Jeff,
Yes, the oils have gotten better and so have the parts they are designed
to protect. Unfortunately the brass synchro rings in our cars are
vintage 1960's and are damaged by sulfur additives in gear oil in spite
of what your mechanic says. The Valvoline 50 wt oil you are using does
not have sulfur additives so you will be ko. In fact I seem to recall
that some of the literature that came out when our cars were new
recommended using that sort of stuff in gearboxes.
Cheers,
Joe
Jeff McNeal wrote:
>
> Speaking of diverse opinions, my transmission guru scoffed at the notion of
> gear lubricant additives damaging parts they are created to protect. If
> anything, he seems to subscribe to the notion that oils have gotten better
> over the last 20 years, not worse. He said the top three reasons for synchro
> ring failures in order, are:
>
> 1. Not enough oil.
> 2. Not enough oil.
> 3. Driving the hell out of the transmission, when it doesn't have enough oil.
>
> I really like this guy. Anyway, I picked up a couple of quarts of Valvoline
> 50w racing oil, and we'll see if it improves things. I'm hoping for the
> best.
>
> Thanks for all the info.
>
> Jeff
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