[Fot] D-Type Overdrive Recommended oil

[Duncan Charlton]

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 <mailto:fot at autox.team.net>>
> To: 'Joe Curry' <spitlist at cox.net <mailto:spitlist at cox.net>>; FOT at autox.team.net <mailto: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 <mailto: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 <mailto: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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