Penrite Lubricants makes an excellent synthetic GL4. It is called 10 Tenths
Competition gear trans. It is listed as SAE 10W-30 which is the same as API
GL-4 80w.
I use it in my race car transmission (stock TR6) and it even cured some
shifting problems in my wife's TR8.
Penrite is the Australian company that makes Stromberg and SU Dashpot oil
that is sold by some Triumph part suppliers.
The website is http://www.penriteoil.com/ and the US distributor email is
gardencityclassics@earthlink.net
NFI etc.
Mike Munson
http://www.triumphowners.com/135
Listers:
Thought I'd throw in my 2 cents on the GL-4 issue.....discussions with
technical reps with Valvoline indicated that GL-5 may harm "yellow metals"
(brass, etc.) at higher temperatures. The rep indicated that at "normal"
temps, GL-5 should be fine. That being said, I (like many of you) only use
GL-4 in my tranny and diff. I found my 5-gallon bucket of Valvoline GL-4 at
a
tractor supply store. In addition, the folks at Red Line Oil address the
GL-4/5 corrosiveness issue in their literature, and typically have
knowledgeable technical representitives. They say that their MTL product is
".....non-corrosive to syncros and bushings." You may want to call to
confirm
prior to plunking down $10 per quart for gear lube. They also make a lube
called MT-90 which is a heavier 90 wt. (???) Can anyone on the list confirm
the appropriate Red Line gear lube application for the TR?
Wishing everyone a healthy, happy, and Triumphant New Year!!!
Matt Mullin, 6-PACK Chairman
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