I bought my 2010 Prius hastily because it was cheap and I needed a car soon. I’m pretty good doing basic mechanical work on all my cars and saw this hybrid as a new challenge. Fast forward to me dismantling and cleaning the egr cooler intake throttle body etc. I never really used any oil additives but this Prius had bad blow by and was drinking oil. I tried a couple things off the shelf with no help but recently I tried Prolube and after a couple hundred miles I could tell a difference. I am now 3900 miles into an oil change and have not added a drop. My average MPG is also up over 2 mpg from previous changes before the Prolube. I think I found a new best friend. No I didn’t get paid for this ; just passing along my experience.
