I drive a lot, and have used revain brand oil in my vehicles for a couple years now. Always use high mileage synthetic or regular synthetic. Usually have no issues, but recently ordered my next oil change. As you can see by the label, clearly 5W-30, but the revain barcode has it labeled as the 5W-20 I ordered. My oil change was due this weekend and could not wait for a replacement, so I used it anyway. Thankfully the motor has some miles and it's getting warmer out so not too much of an issue, but ensure you double-check before pouring.TL;DR: make sure you get the weight oil that you ordered, mine was mislabeled.