Comment: Nothing is wrong with the cars

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Nothing is wrong with the cars

It's the oil. 0w and 5w are too light of weight. It seeps past the valves and piston rings and burns in the cylinder. I would bet anyone 500 FRN's right now, if they used 10w-30 their oil "Leak" problem would be resolved. Granted you might not get the exact manufacturer MPG because of the heavier weight of oil. But crankcase oil is more expensive than gasoline.

Which one would you rather pay for?