Gordon,
I am not the authority on this but I think that gear oil and engine oil
viscosities(sp?) are measured differently. I think that 80W or 90W gear oil
is similar in viscosity to 30W engine oil. I believe that their are other
differences (friction modifiers?) that effect the way that the oil climbs
the gears, and I am sure there are other differences as well. I would love
to hear more on this as I am kind of fuzzy on some of this myself.
Tom Rollins
1969 GT-6+
1972 TR-6
1974 Europa Special
tom@ntcs-inc.com
-----Original Message-----
From: gbuck@pinnaclegrp.com [mailto:gbuck@pinnaclegrp.com]
Sent: Thursday, November 19, 1998 4:06 PM
To: triumphs@autox.team.net
Subject: TR6 transmission oil
I picked up the latest issue of Practical Classics at the newstand yesterday
and ran across a little item that I thought I ought to ask the list about.
Under letters to the Editor there is a question about 80W/90EP gear oil vs.
20W/50 engine oil use in the transmission. Apparently this place "Chestnut
Classics" recommends using the 20W/50 engine oil in the trans for "improved
gearchanging and giving the unit an easier life" even though the factory
recommended the heavier oil. Anyone have any experience or "opinions" about
this?
Another item of interest for TR5/6 and 2500PI owners is a new electronic
fuel injection system developed by Chestnut Classics of Barnack, Stamford,
Lincs (01780 740945). Main components are Bosch electronic fuel injectors,
a modified BMW fuel manifold with pressure relief valve, fuel pump and
electronic control unit (ECU). Original TR P.I. manifolds and linkage are
retained. It's kind of pricey at 1,500 British Pounds (about $2,500), but
still fun to think about. Anyone familiar with Chestnut Classics?
Gordon Buck
Sultan, Washington
71 TR6 CC62806
67 MGB GT
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