Originally Posted by wstar

Really depends on your definition of "step on the gas on the highway". If you mean you want to pass another commuter in your nice-looking car, you won't have any problems. If it means you want to double the speed limit for a long time, maybe Even then, highway isn't so much the issue, it's aggressive low-speed driving with lots of repeated accel/decel cycles that really runs the oil temps up. And even then, you won't limp-mode the car on the street, I don't think anyone has reported that yet. You'll just potentially wear out your oil and your engine faster.