Site Donor 2023
- Aug 7, 2020
I took a look at the label on my M1 High Mileage oil today and noticed that it said that it's useful for preventing leaks. There was no mention of the oil stopping leaks. My experience is that it didn't stop a leak in my previous car. Based on the M1 label, I'd not hold out any great hope for the oil to stop a leak, although I'm sure there are some instances where that's happened. Just wanted to share that bit of info from the M1 label.