<VV> GL4/5

MarK Durham 62vair at gmail.com
Mon Apr 6 16:03:02 EDT 2015


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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