It's amazing the diversifications of opinions,
btdt's, spec sheet conflicts, etc etc
...as an example, the D type O/D is the same
on the MG as the early (read same model years)
and the Triumphs. MG spec'ed straight non-d
30wt motor oil while Triumph spec'ed 80-90wt hyd.
I use... 30 in my MG and Castrol 90 in my Triumph.
both (all thee) O/D's run fine and have never given me
a problem. Triumph did, in it's later days, suggest
30 was better. I've always used what was in the
oem handbooks for that year.
The real concern here is the additives in both (or
lack there of) and how they effect the brass and
copper parts and seals rubber used by the mfr.
----- Original Message -----
From: "Jeff McNeal" <email@example.com>
To: "Mike Chmura" <firstname.lastname@example.org>
Sent: Wednesday, April 02, 2003 12:55 PM
Subject: Re: Funky D-type O/D, P. II
> After a lengthy discussion with the guy who rebuilt my transmission and
> probably knows more about geaboxes, overdrives and diffs than anyone I've
> met on the planet, he suggested that I try splitting the difference with
> non-foaming 50w racing oil. I'm going to pick some up from him this
> and give it a go. If that improves things, I'll leave it at that, but I'm
> adverse to trying 30w non detergent as well, or the Redline stuff that Joe
> Curry recommended.
> Best wishes,
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