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Re: [Mgs] 90w in Transmission?

To: "Stuart MacMillan" <macgroup@comcast.net>
Subject: Re: [Mgs] 90w in Transmission?
From: "Simon Matthews" <simon.d.matthews@gmail.com>
Date: Tue, 22 Jul 2008 14:01:09 -0700
Stuart,

You should consider changing that oil for MT90. If you look at Redline
Oil's website, you will see that MTL is equivalent to 5W30/10W30
engine oil, which is slightly thinner than the recommended 20W50. MTL
is slightly thicker, although still not quite 20W50.

I use MT90 in my MGA, although I originally used MTL. I can't say that
I noticed a difference when I changed to MT90

Regards,
Simon


On Tue, Jul 22, 2008 at 12:45 PM, Stuart MacMillan <macgroup@comcast.net> wrote:
> At least you don't have an OD tranny, but it would probably work sort of
> okay there too.  90w gear oil makes is harder to shift because the synchro
> rings have a thicker, slipperier layer of oil between them and the cone on
> the dog gear.  I think the ears on the rings will wear faster the harder you
> have to shift
>
> At the risk of igniting flames, I've used Red Line MTL for over 13 years in
> my '65 with OD, and for 5 years in my daughter's '71 GT, also with OD.
> Great stuff. Shifting is quicker, OD works great, and you never have to
> change it.
>
> Stuart
>
>
>
> -----Original Message-----
> From: mgs-bounces+macgroup=comcast.net@autox.team.net
> [mailto:mgs-bounces+macgroup=comcast.net@autox.team.net] On Behalf Of Paul
> Hunt
> Sent: Tuesday, July 22, 2008 1:03 AM
> To: MG List; mg-mgb@yahoogroups.com
> Subject: Re: [Mgs] 90w in Transmission?
>
> This is a fallacy.  Factory V8s have 90 gear oil as standard, mine was a
> daily
> driver parked outside for many years including periods of below freezing and
> I
> never had a problem, but I can't speak for the condition of anyone else's
> gearbox.  As long as it *is* gear oil, and not *differential* oil it should
> be
> OK, don't junk it now just wait and see how you get on.
>
> PaulH.
>  ----- Original Message -----
>
>
>  ...  With the engine cold, even in the
>  summer, the 90W will be too thick for the snycros to work properly...
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