Quote:
Originally Posted by Grey Ghost
Does MMO have any zinc in it? I know they've changed motor oil over the years and the old cams needed more zinc in the oil. I try to remember to add some on my truck oil changes. But, wonder if it's a good idea or not.
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No. Basically it's mineral oil, Stoddard Solvent, and scents and dyes.
I've been running Rotella or Delo diesel-spec oil in my older flat-tappet cars for the past 20 years and tens of thousands of miles.
No worries, and no need for expensive 'boutique' motor oil.
Diesel-spec has all th ZDDP you need.