The Leyland Workshop Manual specifies 10W/40, 10W/50 and 20W/50 as being
suitable for all temps above -10 degrees C.
(or if that URL doesn't work try )
From: John Walker <firstname.lastname@example.org>
To: Terry O'Brien <email@example.com>; mg list <firstname.lastname@example.org>
Date: 10 August 1999 21:34
Subject: MG Oil
>At 01:06 PM 8/10/99 -0700, Terry O'Brien wrote:
>>great suggestions Simon, but I have just one more...engine oil. Why
>>put in 20/50 when the manual calls for 10/40? (yes, I have 20/50 in
>>the shifter) In the instant case, the engine was recently refreshed
>>wigh great compression and oil pressure. i know this has been
>>discussed in the past, but it may be time to hash it over
>>again...better than discussing felines...
>Hmm. That's interesting. My manual calls for 20/50 to be used everywhere
>in the car except for the steering rack boots. I have no references to
>my manual what so ever.
> John Walker
>~= Early 1974 MGB =~
> In Progress :)