To: dmcnews submit,
I'll bet this thread ends up killed - - there are more opinions on oil than on fishing lures or golf clubs!
Perhaps some factory reference material is in order:
From the DMC OWNERS manual p40 (omitting metric references):
Above +64 degF = SAE 20W50;
+2degF to +102 degF = SAE 10W20, 10W30, 10W40, 15W40, 20W40;
Below -2degF = SAE 5W20, 5W30, with the following footnote:
"This oil should not be used when temperature is continuously above 32F"
I guess they didn't consider the case where the temperature is between -2 and +2 degF ;-)
Now - just to confuse everyone, the DMC WORKSHOP Manual (Page A:05:01) states
Above 14degF = 15W40, 20W40, 20W50
Below 14degF = 15W40, 10W30, 5W30, with the following footnote:
"The use of 10W30 multi-grade oil is not advisable unless the temperature warrants it. However, if a 10W30 multigrade oil is used to assist starting in cold weather it may remain in the sump as long as the temperature does not rise above 10degC" (14degF).
Counfused? So am I. Sounds like about anything is OK as long as it is Name Brand oil and you change it periodically. Many of the grades listed by DMC are no longer available. Since I don't run mine in the winter, I have always used Castrol 20W50 since I happended to read the owners manual before the technical manual. Most modern cars (Ford, GM, Honda etc) now recommend 5W30 for almost every condition.
To quote Dennis Miller, "It's just my opinion, I could be wrong." YMMV
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