Alfa Romeo/Alfa Romeo Digest Archive
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Re: alfa-digest V7 #658
In a message dated 4/23/99 7:51:26 AM Eastern Daylight Time,
owner-alfa-digest@domain.elided writes:
<< Is the 5-50 too
thin and really just a winter oil? Thanks bob Brooks
>>
Bob,
The oil engineers warn about using an oil that covers more than 30 points in
a high revving engine. The viscosity enhancers are very long chain polymers
that tend to break down through the mechanical shearing of the oil at high
rpm, leaving you with a very low viscosity base stock . I'd stay with the
20-50.
Bill
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