oil and filter

FWIW, Since I wanted to make sure I was not nuts about STP having zinc in it I sent an email to STP and this is the response I got;

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Dear Mr. Clement,

Thank you for contacting us about STP Oil Treatment - 4-Cylinder. We always appreciate hearing from our consumers.



The STP Oil Treatment and STP Oil Treatment- 4 Cylinder both contain ZDDP as the anti wear agent. Both products were developed originally for flat tappet cam engines. I hope this information helps you.

Again, thank you for contacting us.

Sincerely,

Patti Copper

Consumer Response Representative

Consumer Services