On 5 Sep 2008 at 13:11, Tony Childs wrote:
> I chose to go with straight grade SAE30 oil; in my D-Type overdrive
> when I installed it in my Spit. I have no delay in engagement or
> disengagement and no slippage at all. Trans shifts smoothly and no
> noisy gears.
When I first installed a rebuilt gearbox w/OD from QM I used non-D 30
as John E recommended. It worked okay (after I replaced the solenoid
and then the entire OD, but that's a different story). But what I
also observed was that the shifting behavior changed with gearbox
temperature. Perhaps it is because the only non-D oil I could find
was probably pretty cheap stuff, but it seemed to thin out rather
badly as the box warmed. When I recently switched to Valvoline
Racing Oil 20w50, that behavior went away. Now it feels smooth and
lightly damped no matter the temperature. And the OD works like a
charm, as God and L. de N. intended.
Just my observation. YMMV.
--
Jim Muller
jimmuller@rcn.com
'80 Spitfire, '70 GT6+
_______________________________________________
Support Team.Net http://www.team.net/donate.html
This list supported in part by the Vintage Triumph Register
http://www.vtr.org
Triumphs@autox.team.net
http://autox.team.net/mailman/listinfo/triumphs
http://www.team.net/archive
|