[Fot] D-Type Overdrive Recommended oil

[Bruce Stutzman]

Brad Penn GL4 non synthetic 85-90.
Bruce

On Wed, Aug 22, 2018 at 4:55 AM Duncan Charlton via Fot <fot at autox.team.net>
wrote:

> Let’s see if this table of comparative oil viscosity will stay attached.
>
> Duncan
>
>
>
> On Aug 21, 2018, at 1:03 PM, barry rosenberg via Fot <fot at autox.team.net>
> wrote:
>
> I agree on the 85-90 weight gear oil. A lot of people think the 90 weight
> is too heavy or thick but it is very close to a straight 30 or 40 weight
> motor oil. The viscosity of motor oil and gear oil is measured differently
> and at different temps. A gear oil has additives and structure that resists
> the shearing forces between the gear teeth. All TRs came from the factory
> with this oil and I have used it in customers cars over 40 years. Never a
> problem. One Healey 3000 had over 976,000 on one rebuild of the overdrive
> gear box! 90 all the time.
>
> Barry
>
>
> ------------------------------
> *From:* M&M Hado via Fot <fot at autox.team.net>
> *To:* 'Joe Curry' <spitlist at cox.net>; FOT at autox.team.net
> *Sent:* Tuesday, August 21, 2018 1:51 PM
> *Subject:* Re: [Fot] D-Type Overdrive Recommended oil
>
> Joe,
>
> Not sure if anyone answered you yet but I always use 85-90W GL-4
> non-synthetic oil.  The GL-4 is easier on the brass/bronze components.  The
> NAPA brand is StaLube 85-90W.  O’Reilly also has a 140W GL-4 if you want a
> heavier choice.  Moss also carries the Dynolite brand in a straight 90W
> GL-4 for $10 a quart.
>
> Mike
>
>
> *From:* Fot [mailto:fot-bounces at autox.team.net
> <fot-bounces at autox.team.net>] *On Behalf Of *Joe Curry via Fot
> *Sent:* Monday, August 20, 2018 1:55 PM
> *To:* FOT at autox.team.net
> *Subject:* [Fot] D-Type Overdrive Recommended oil
>
> I am about to dig into my overdrive that quit working and while I am at it
> I plan to change the oil.  I have previously been using synthetic from
> Lucas but that is expensive and difficult to get where I live.  So I am
> looking for recommendations of normal types of oil (Non-synthetic) for the
> best results using a D-Type Overdrive on a 4-Synchro 3-rail Spitfire
> gearbox.
>
> Thanks,
> Joe
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