[TR] TR4A overdrive transmission

[David Porter]

from the healey list...

There is a good if brief article in this month's issue of "Vintage
Motorsports" dealing with lube choices for both transmissions and
differentials.  Though the article does not go into matters such as what
metals like what GL ratings it does confirm that 75-90 transmission oil is
approximately equal in viscosity to 10w-40 engine oils and is the right
choice for most of us.

Worth a read--Michael Oritt
_____________________________


On 8/24/2014 8:01 AM, Randall wrote:
>> I think I may have been running multi-weight
>> 20w-50 at the time.
> If you do want to try 20W50, both Ken Gillanders and Herman van den Akker specifically recommend Valvoline Racing oil.  It is low
> detergent plus has anti-foaming and ZDDP additives.  I ran it for several years, and had no trouble that I associated with the oil.
> (I believe the slipping in 2nd gear was due to low oil pressure.)
>
> Valvoline has changed hands and expanded their "Racing oil" line since then, I assume the non-synthetic, "Not Street Legal" stuff is
> the equivalent of what they sold then.  "VR1" apparently has more detergent in it, to meet API requirements.
>
> Randall
>
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-- 
Dave Porter Porter Custom Bicycles 2909 Arno St. NE Albuquerque, NM 
87107 505-352-1378 Go HERE: my world www.porterbikes.com/