Is Shell Rotella 15-40 a good oil?

#31

04-01-2011, 10:19 PM

Duke2.6

Registered User

Join Date: Mar 2003

Location: Southern California

Posts: 2,293

You obviously didn't read the article linked in post #26, or the API 1509 specification.

Zinc is not limited by the API specs. Another element that is a component of ZDDP is.

What is it?

You need to get with the program if you want to understand engine oil and stop spreading misinformation.

Duke

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