Typical running temp for a manual gearbox would be 150-175 F.
Heat is transferred very easily from the engine to the tranny, so you need
to make sure you are not looking at a more general engine cooling issue.
Do you have an idea what the engine temps were during this excursion?
It might be a good idea to hook up a digital temp sensor to the tranny case
and monitor things.
After experimenting with the various viscosities in my 5 speed I've
determined the you want to go with the 90w GL-4 oil. NAPA sells it.
Sta-Lube Brand. 140wt quiets the gear noise down but the shifts are hard
until it warms up.
-----Original Message-----
From: spridgets-bounces@autox.team.net
[mailto:spridgets-bounces@autox.team.net] On Behalf Of Edward Perez
Sent: Friday, September 03, 2010 10:48 AM
To: Spridgets@autox.team.net
Subject: [Spridgets] Hot stick in slow traffic
Drove the Midget up to Tulalip (about 18 miles) on some back roads, then the
freeway. I noticed the transmission and stick shift gets extremely hot in
stop/go traffic. We put 30 wt. oil in the trans when we installed it.
Would a
heavier oil keep it cooler? Is this a problem? It got pretty freakin' hot
and
had me worried..... Datsun 5 speed.
Edward Perez
Snohomish, WA
78 Midget (1275)
http://www.flickr.com/photos/lbc_newbie/
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