I bought Prolube because I saw the add and I was impressed with the difference between Prolube and what I was using(Lucas). I have no complaints with Lucas but why not use the best product for the job. I know it sounds crazy but I actually think I hear a difference in my motor. I seems smoother and a little quieter. Like I said I’m a first time user so only time will tell but I will be buying more and adding some to all of my cars. One small suggestion maybe offer a measuring cup with your purchase.

I use this in our classic cars to new cars and it really does make them all run quieter and smoother. I did gain about half a mile of mpg on our 2022 Bronco and 2015 Fiesta.

The only issue I had was with my last gallon shipment. It leaked; the box was saturated and lost 2-3 ounces of product.

I have a 3.5 V6 in a 2014 Highlander. At about 150,000 it started sounding a bit louder... Sort of clacky! The oil has been changed at 5000 miles like clockwork since new. I went from 5w20 to 10w30 which helped because it is really hot here. I ordered the Prolube to see if it would help. I added 1 once per quart of oil after an oil change. I was absolutely shocked at how quiet the engine is now. I've put about 300 miles on it since adding the Prolube and I'm very pleased. I can't wait to add it to my old tractor transmission. I believe it will help with the shifting.