<VV> Making sense of a gazillion posts on GL-4 vs. GL-5 (Yes, I did read them)

[Charlie]

Nope I read them all, ~ and I hope this finds you in a better mood?

I recently tore my '65 Corsa 4-speed transmission and differential apart,
and a friend put them back together.

He filled it up with GL-5 that he bought, and now it looks like we need to
drain it out?

So, I want to be sure before I have to throw away what he was helpful enough
to do for me.

So now I'm just trying not to be confused by the plethora of repeated,
concurring and dissenting opinions being posted, trying to make sense of it
all.

Then, while ordering some parts from Clark's, I asked the tech guy who said
that GL-4 is correct for 4-speeds (and agreed that it should not be "GL-4
hypoid"), and that their regimen is to use GL-5 for PGs only.

I didn't ask him about non-synchro 3-speeds though ...

Charlie


-----Original Message-----
From: VirtualVairs [mailto:virtualvairs-bounces at corvair.org] On Behalf Of
Vairtec Corp via VirtualVairs
Sent: Tuesday, April 07, 2015 3:59 PM
To: virtualvairs at corvair.org
Subject: Re: <VV> GL-5 gear oil is for automatics?

Charlie, perhaps I should apologize in advance for being in a bad mood.  
Apparently you are just posting to this thread, not reading it, because
yesterday I posted

"Powerglide-equipped vehicles can use the newer GL-4/GL-5 products because
the differential lube is not shared with the transmission. "

Just sayin.'  Again.

--Bob


On 4/7/2015 6:48 PM, Charlie via VirtualVairs wrote:
> Is it possible that GL-5 gear oil is for automatics, and since 99% of 
> "average" cars are auto, it's "safe" to recommend it, since so few are 
> NOT auto, there are not enough of us to be a problem for them?
>
> Just sayin' ...
>
> Charlie

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