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

mgbv8Member

Callisa,

My assumption is that the oil engineer will spec the oil according to the weakest link within engine and current oil specification.

However its also possible that the car could be used for short shopping trips or an owner that lets the horses loose.

The oil engineer I assume takes this into account.

With Porsche the latter owner is more likely and perhaps therefore the 3.6 HTHS recommendation. Wheras the former driver may require improved mpg so a thinner oil is specified.

So the Porsche owner may actually want to stand on the edge a little more often.

The paradox is that by using a thinner oil with more flow and better cooling, you may be able to stand on edge anyway.

My problem is the manual was written 30 years ago and specified a 20W/50 Mineral oil.

2/2/055:05 AM

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