I am not easily impressed but your fuel additive cured a noise in the fuel pump of my 25hp 4 stroke merc, it would stick and not pump,now it works great.

Thank You so much for a great product. Your fuel additive I started using back in 2003 in my Crotch Rocket. Was having a fuel issue and your product took care of it overnight. The real story is I have a friend who parked their cay 96 chevy in the barn in 2007 and didn't try starting it till 13 mo's later it ran like crap a bad miss and wouldn't idle. We did put a fuel stabilizer in with the fuel before we parked it.

I recently replaced the fuel sending unit in my Xterra which Nissan would not cover. I just came out of the warranty by a few miles. First tank, my mileage was off by 30 to 40 miles. I pulled the battery cable to reset the ECM. I was only off by 20 to 30.

On average I get about 300-320 miles on a full tank of gas on my 2003 Dodge Intrepid 3.5L; I currently have 120,000 miles on the engine, and use Lucas Oils in the engine and transmission.

I am thrilled at the difference I am feeling in my 1989 corvette. It was sluggish and idle was rough. Now I feel as though I overhauled the engine!

My 2005 Nissan Altima had been running great until a few days ago when i was out and it didnt want to start...just cranked with no kick.. After a few minutes of cranking it finally started but this hard start condition repearted.. I went to local auto parts where Lucas Injector cleaner was recommended.. After runnning about 5 hours on the highway with the cleaner, the engine smoothed out and my fuel mileage increased by about 10% over what I usually got.

I have a 1990 Lincoln Town Car and got water in the gas. I tried another fuel treatment and I guess it got the water out but my mileage was down to 16.4 mpg by the dash computer. I tried your 5.25 ounce fuel treatment on a half tank of gas and my idle smoothed up and mileage went to 18.5 mpg. After a second bottle, it is now up to 18.8-19.0 depending on how much in town driving I do which is good for a large body car with a 5.0 liter in it. I,ll be using it from now on and my next oil change I will add the synthetic oil stabilizer. Thanks Lucas for such great products that really do what they claim. John Wyatt

The Lucas Upper Cylinder Lubricant is by far the best choice for maximizing a clean engine and fuel economy. In a tank that I normally would get 300 miles, I easily now get 350+ miles to the tank. Using it regularly is now a part of my routine and I can't say enough good things about this product! Everyone should use it! Kurt Cross

I religiously use your upper cylinder lubricant in my atvs and my semi, and the heavy duty oil stabilizer has worked wonders with my wife's worn out oldsmobile (oil pressure). Thanks for offering superior products to the public. Keep up the good work!!! Adam Snook

I have a 2000 Honda civic with 120k miles, I've done regular maintenance on the engine and it still runs good for a 12 year old car. Lately I've noticed some more vibration at idle and slower acceleration, so I added a bottle of Lucas Oil Upper Cylinder Lubricant and Injecter Cleaner. WOW, what a difference! The engine runs smoother, quieter, and with less vibration. Along with the Lucas Oil Stabilizer my engine has never run better. Your products are the best on the market by far and cost no more than other brands.