[T2] re Oil weight

[Robert Mann]

Richard asked:
>  I have to run SAE 50 in the summer.  SAE 30 is too thin, my oil 
>pressure light will flicker in the summers on 30 weight.


David's main responses were:
>
>of course, if your oil light is flickering with 30 weight in the
>summer - that's actually a sign of low oil pressure. :)   Maybe just a
>sticking relief valve, but could be worn mains (or even a worn out
>pump...).

	Flickering oil-P light at slow idle after fast cruising is 
not proof of anything terribly wrong.  My 1600DP went hundreds of mi 
in this condition.  If the oil P rises promptly to, say, 30 - 50 psi 
upon returning to cruising revs, that is the more important fact.


>   the 50w is just a bandaid
>in florida year round, 20w50 (valvoline + rislone) - I bailed on
>straight weight a long time ago.

	I agree, precisely.
	I see no reason to use any single-viscosity crankcase oil. 
Multigrade really is as purported (if changed often enough).

-- 
Robt Mann
Whangaparaoa, New Zealand
'73 VW 1600dp Devon camper
'53 Meteor V8
various Jawa-CZ and Jawa-NZ strokers