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slightly heavier Shell Helix 5W40, I noticed a reduction in cold start puffs of oil
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Bingo.
When Porsche recommended the oil for these cars? Mobil1? They were not owned by Exxon!! Exxon bought them and yanked a good chunk of additives out of the Mobil oil brand. Add up the mileage on these cars? ZERO reason to run the 0/40
I'm running 10/60 in all the race cars. We just warm them properly before the first session. ZERO issues. ZERO smoking.
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