Dave, gear oil and engine oil are rated on two different scales. If my memory
serves me well 30W engine oil has almost the same viscosity as 90W gear oil.
This information I believe is fact as it was presented to me by one of our
lubrication specialists. (I work for a refinery).
Hope this helps.
Dave Formstone
1960 Bugeye
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From: chasdoug@gte.net[SMTP:chasdoug@gte.net]
Sent: March 18, 1998 14:19 PM
To: Foxy Dave
Cc: spridgets@autox.team.net; David Ramsey
Subject: Re: trans drain plug tool
Dave,
The note earlier on this list said that engine oil and gearbox oil were
rated on two different scales. That, in fact, 90w gear oil is the same
viscosity as 30w engine oil.
Chas Douglass -- Seattle Wa
Foxy Dave wrote:
>
> If this is true ...
> > I replaced the gearbox oil with synthetic 75w-90. Very nice change!
> > Thanks for the suggestion, whoever it was that mentioned it. Smoother
> > shifting and quieter when hot. One of the nicest easy (other than
> > getting that damn fill plug started back on it's threads) changes I've
> > made for driveability.
> why do the books say to use 20/50w motor oil in the trans ?
> I'm tempted to change over 'cause it seems to make good sense to give the
> gears a heavier oil ..... doesn't it ?
> Does anyone have a good argument to the contrary ?
>
> Nice tool invention Crash !
> Please put me on the waiting list for purchase ;-)
>
> At 10:49 AM 3/18/98 -0800, David Ramsey wrote:
> >
> >Hi Chas,
> > I have invented a high tech tool that aids in the removal and
>replacement
> of the tranmision fill plug.
> >
> >>
> >> I replaced the gearbox oil with synthetic 75w-90. Very nice change!
> >> Thanks for the suggestion, whoever it was that mentioned it. Smoother
> >> shifting and quieter when hot. One of the nicest easy (other than
> >> getting that damn fill plug started back on it's threads) changes I've
> >> made for driveability.
> >
> > I will be selling these "Pat Pend" tools for the low cost of 29.95 +
> shipping, as soon as the tooling is done. This special tool consists of a
> 2" piece of high tech 5\8" rubber hose "heater or garden". All you need to
> to do is loosen the drain plug with socket wrench and place the special
> tool on the plug and remove by hand, to replace the drain plug you just
> place the special tool "Pat Pend" and drain plug on the transmision and
> hand tighten, remove the tool and snug-up the plug with the socket wrench.
> > At this time I have several hundred of these tools in stock (the end
>of
> my 5/8" sears garden hose got run over by my bug-i). However shipping will
> be delayed about 6 months, because I am waiting for the paper "Made in
> England" stickers to arrive from England.
> > Crash
> >
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