Newbie with questions

[70Sixter]

Originally Posted by BobH

As far as oil weight is guess I'll go with the Porsche owners manual specs.

The only problem with the manual is that oils are periodically reformulated. At one point (IIRC) Porsche recommended 15W-40, and I think my car came with it.

There is a wealth of info on this subject. Search button here/RennTech or Google. LN Engineering has some good info, API site informative too.

Recommend an API rated SH or SJ oil. SL is absolute minimum.

Look for ACEA (European) A3/B3 rating also.

I no longer use 0w-40, and recommend 5W-40 or maybe 10W for mild winter climate. And maybe 50 weight for really hot summers.

There is a TSB on Porsche approved oils, many of us disregard it. I did after warranty period. But it is a point of departure for making a decision.