<VV> GL4/5

[Stephen Armas]

I'm using Amsoil Manual Transmission and Transaxle Gear lube 75-90 (gl4 spec and states protects brass synchronizers) for my sons 65 4spd. And the Amsoil 80-90 (gl5 spec) for my other son's '63 with Powerglide.

Sent from my iPhone

> On Apr 6, 2015, at 1:03 PM, MarK Durham via VirtualVairs <virtualvairs at corvair.org> wrote:
> 
> Paul, let it drain over night and that should be fine. I put a valvoline
> synthetic in my car that I will drain too, but as long as you have a drain
> plug in both the trans and diff getting most of it will do the job.
> 
> I thought I read that amsoil product was OK??
> On Apr 6, 2015 11:49 AM, "Paul via VirtualVairs" <virtualvairs at corvair.org>
> wrote:
> 
>> I've followed the ongoing conversations regarding GL 4 vs GL 5 with great
>> interest. Unfortunately, it's a bit too late. I filled the gear case of my
>> 66 4-speed with Amsoil which "meets specifications for GL-2 through GL-5".
>> I thought I noticed more difficult shifting, but chalked it up to my
>> imagination. Now I'm pretty sure that I want to go with a pure GL 4. I
>> installed a plug in the molded-in  boss (like the 65's have), so draing is
>> simple. My question is "Do I have to flush out the old stuff, or is it
>> sufficient to just drain and refill?"
>> 
>> Paul
>> 65 Corsa
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