Reply to "Truly which synthetic brand of motor oil is the best?"

callisaMember

To understand the situation today, you have to understand what happened in the past. Early XW-30 formulations where by far not as capable concerning wear protection as they are today. It is believed and commonly accepted by mechanical engineers (not by Lube Engineers...) that the conrod bearings of high RPM engines need high viscosity / HTHS oils to survive.
But "lessons learned" from the past with these early formulations are still very deep in the heads of the engineers at Porsche, Alfa, Ferrari etc.
Mechanical Engineers are a conservative, tough crowd...

1/30/0511:28 AM

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