I've never used Pennzoil High Mileage but I do know from experience that MaxLife has stopped leaks in 2 out of 2 applications I tried it in. Granted, they were very small leaks (a few drips a day) but they did stop after switching them from 5w30 conventional to Valvoline MaxLife 5w30 or 10w30
Originally Posted By: ThirdeYe
I've never used Pennzoil High Mileage but I do know from experience that MaxLife has stopped leaks in 2 out of 2 applications I tried it in. Granted, they were very small leaks (a few drips a day) but they did stop after switching them from 5w30 conventional to Valvoline MaxLife 5w30 or 10w30
Did it take sever OCI's on Maxlife before the leak stopped?