Just follow the instructions on the bottle. Do NOT drive the car with engine flush in the crankcase. It changes the viscosity of the oil such that it is no longer able to withstand load. RPM's are fine, just no load. Which is why almost all flushes recommend idling the car for 5-20 minutes (depending on manufacturer), some recommending fast/high idle, of about 1500-2500rpm. And do NOT just simply top up with 6 quarts if you have a turbo. Drain the oil cooler as well, meaning you should top up with 7 quarts.
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