I may be wrong, but I was under the impression that Shell Rotella oil
was still using the high zinc (SAE SJ rating) for some time after the
automotive oils had switched to the new low zinc SM rating, but it now
has the low zinc rating as well. Getting the exact current spec would
be better, but lacking that just check the side of the container.
Unfortunately, many specs found on the internet are outdated. I have
been using straight 30 weight oil with an intermediate SL rating in my
street Triumph and other old nonracing engines.
-Larry
On 10/30/2010 1:38 AM, Greg Solow wrote:
> You may be able to contact Shell Oil technical services in
> Europe..They could tell you the Zinc and Phosphorus content of the
> Shell Rotella oils available in Europe. I would bet they are the same
> as here. The "automotive Diesel" grade oils that are sold here, were
> formulated for European Diesel engine cars to meet the car
> manufacturer's specs. You are looking for over 1600 parts per million
> of Zink and 1300 parts per million of Phosphorus.
>
> Greg Solow _______________________________________________
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