Quote:
Originally Posted by JK001
Valvoline 5w40 MST is fine for track and street. No need to drain. It is specified in the '17-18 1LE owners manual. Maintains warranty. I've been using it for the last two oil changes, oil temp stays well below red when the car is being pushed. No dip stick perceptible oil use at all. I'm very happy with this oil
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Oh, ok. So, only the 15W50 is not for street use?