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From Blog reader M.P. on December 5th, 2022:
Many thanks for the fact-based work and testing you’re doing.
I’ve road raced a vintage 4 cylinder car for 10+ years, rebuilding the motor every 2 years or so.
With the latest motor, we utilized your test results and ran the
motor from new with 5w30 Quaker State Full Synthetic, API SP that you
highly recommend. Inspection after a recent teardown revealed cam lobes,
followers and cylinder liners in FANTASTIC condition. Visibly and
measurably less wear that we’ve experienced in the past with high
viscosity “race oils”.
Thanks again- you are a unique human being and a blessing to those in the motorsports community willing to learn.
You are welcome. Thank you very much for the kind words. It’s nice to hear appreciation like that.
And thanks for the terrific feedback on your experience. It’s great
to read that you have had amazing success just like many, many of my
other Blog readers have had, from making use of my Engineering Test
The source of the incredible results you and my other readers have
benefitted from, can ONLY be found here in my Blog. All that “Real
World” experience EXACTLY MATCHES what my Test Data has “Always
Predicted”. And it specifically backs-up my recent Tech Article #75 on
the CURE for flat tappet cam lobe failures.
That’s why I do all this. Because the Automotive World needs someplace to go that actually provides Engineering FACTS.