I agree with what you have found about the synthetics, only I haven't tried Pennzoil Platinum yet and still waiting for some information to be returned. My favorite is the European Castrol formula 0w-30 but sourcing it can be a problem.
I've found that if your running harder than normal with high RPM and a hotter than normal oil temp, you will burn off some oil (at least in mine) My observations show that if the oil temp is 110C (230F) I will burn off some oil. I definitely need a oil cooler. I don't like oil temps that are over 100C (212F) and will be doing something about it soon.
For the record, my choice of oil is Castrol GTX 10W-30, just because I change my oil more frequently and can't justify the cost of a synthetic oil with the frequent oil changes.
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[B]2009 & 2017 370Z Touring Sport Autos SOLD
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