I added the advertised amount at 47 hr oil change. This is a 4 cylinder supercharged engine with a Stage 2 kit, turning 8300 rpm. I’m glad I added this to my oil change. Because just recently a waterline blew to the intercooler, I had to keep going so JetSki wouldn’t sink about 1/8 mile to boat ramp. The hull filled halfway way with water. Causing motor to die. Once I got jetski loaded on trailer, while water was draining from hull. I immediately checked the oil for potential water oil mixture? Possibly blown head gasket? To my surprise the motor never got hot enough to do so and no water was in the oil. Once waterline was repaired, took jetski back out. There was no loss in performance. JetSki still hits top speed 80mph true GPS and 8300rpm. Thank you PROLUBE for a great product. I’ll be adding this to all my vehicles and any motor I own.

I have a 2012 HD Iron 883 that’s air-cooled. When I first got it, and rode it around town, waiting at traffic lights or even a 20min commute to work on the highway, the motor seemed to run hot.

I was roasting sitting above it while waiting at a traffic light.

It seems to run cooler now that I added close to 3oz of Prolube to the motor.

It also seems to run smoother, in my opinion.