Testimonials for Fuel Treatment

There are currently 45 testimonial(s)

No check engine lights at all and the motor seems to run smoother.

My 2004 Sienna would throw a P0430 code regularly. Sometimes within minutes of resetting the light. I tried the Fuel Treatment and went on a 600 mile trip. I used the Fuel Treatment again at the second fill up. No check engine lights at all! The motor seems to run smoother too. I think I will try to not use it and see if the light comes on. If it does then the fuel treatment really works. Well worth the money for sure. -Ben, Chapel Hill, NC

Thank you Lucas for a great product that performs as advertised!

Just finished a 3250 mile trip in our 99 Dutch Star using Lucas Fuel Treatment for the first time. Added at fill up according to your directions and am thrilled with the results. We are towing a 4500 pound Edge and the coach is at maximum load. Our fuel economy went from the low 8+mpg to 9.9mpg average for the trip! We are powered by a CAT 3216 rated at 300HP. Needless to say it will be added at all fill-ups from now on. Thank you Lucas for a great product that performs as advertised! -Mark N., Edmond, OK

From now on will run nothing but Lucas products in my trucks and cars

First of all let me say I've used Lucas Oil Stabilizer and Fuel Treatment for my Volvo and Detroit diesel engines then switched to Motorkote. Two weeks ago I fueled up and started noticing my truck was getting hesitant and was taking longer to start. Everyday it got worse....10 to 15 seconds to start and it started throwing me injector codes. I figured either I had a bad injector, electrical short or a dirty injector. I was in Denton TX heading home to San Antonio TX when I decided to pour a gallon of Lucas Fuel Treatment in my tanks. About an hour into my drive I pulled over there was no change I figured bad injector so time to get home and head to the shop. When I got home 4 hours later I noticed the codes had cleared and the engine was running smooth and quiet so I was a little relieved. The next morning I was worried because I knew it would act up and I'd have issues starting it. I put the key in turned the switch and she fired right up. I changed the filters, fueled up put a little more treatment in and this engine has been running perfect since. Lucas you have won me over I know your products work and from now on will run nothing but Lucas products in my trucks and cars. -Shawn H., San Antonio, TX

Since we stated using Lucas Oil Marine Fuel additive, we have realized an overall increase in fuel economy in the range of 8-10%!

We learned about the Lucas Oil Marine Fuel additive about 5 years ago and have been using it with great results ever since. We run two heavy duty work boats on a daily basis in harsh marine conditions. Since we stated using this product, we have realized an overall increase in fuel economy in the range of 8-10%! In addition to the fuel additive, we also use the Lucas CK4 oil to which we add the Lucas Oil stabilizer, which allows us to extend our oil change intervals, resulting in substantial annual cost savings. Our boats are critical to our operation and we trust the Lucas Oil products to keep our boats going strong! Sincerely, Captain Mike Rigby, Senior Captain & Director of Engineering Harbor Services, Inc.

All turbo and exhaust brake function has returned to normal saving me at least $1500 to $2,000

My 2008 Dodge Ram 3500, 6.7 Turbo Diesel was plagued with code 0340...sticking turbo vanes. All remedies pointed to turbo removal. After a gallon of Lucas Fuel Treatment the code has cleared and all turbo and exhaust brake function has returned to normal saving me at least $1500 to $2,000. Thank you Lucus! If only more Dodge owners knew. -John I., Tygh Valley, OR

The P0420 code has stopped coming on and my fuel economy has increased.

I never write a review or comment on a product but in this instance I must. I have been using your Fuel Treatment for years. I have a daily commute of close to 200 miles round trip five days a week. I currently drive a 2006 Nissan Altima with over 235,000 miles. With all the mileage I put on cars, I have gotten the dreaded P0420, Catalyst System Efficiency Below Threshold. As a test I tried every product to see if I could get rid of it, clearing the code with my OBDII scanner each time. Nothing seemed to prevent it from coming on. After clearing the code one more time I started using your Fuel Treatment religiously. The P0420 code has stopped coming on. A bit skeptical, I stopped the Fuel Treatment and low and behold the engine light came on and it was the P0420 code. Once again I cleared the code and put the Lucas Fuel Treatment to the test. The engine light with the P0420 code never came on and to top it off my fuel economy has increased. -Marc V., Tannersville, PA

My Mileage Increased…A LOT

This beast was the best vehicle I owned [2005 Jeep TJ Rubicon I-6 AMC 6 speed], yes even over my Ram 1500 Longhorn. After selling my 1993 [Jeep] this was the natural progression for me. Of course Lucas was simply transferred from old Jeep to new Jeep and I anxiously wanted to see the difference the Fuel Treatment would make. Now, with this in the inline 6 (torque monster) what I experienced was completely different. The throttle response didn’t change any but my mileage increased…A LOT. Doing the same trip mentioned above with this Jeep I could make it home on a full tank without Lucas (forgot to buy it before I left…), that was a plus! BUT with having Lucas Treatment it in the tank on the way home, HA! I had a quarter of a tank of fuel left…? I scratched my heading thinking was it windy? The hills different? Did I drive slower? I knew the answer but couldn’t be sure. But after 5 more years of traveling back in for with Lucas in the tank….YES, it was the Treatment that made the difference every single time. - Kyle G., New Brunswick, Canada

All I can say is WOW!!!!!

As a young guy into mechanics and motors you always wanted to do what was best for your powertrain to matter the age. First thing we did of course was a full fluid flush (Engine/tranny/transferase/front-rear diff) of all oils using all your [Lucas] products. I did this out of comfort knowing I would not have issues but here was the most impressive thing for me. I used to travel home biweekly from Fredericton to Dalhousie, NB. This trip was typically 450km each way. I began to use the Fuel Treatment because Dad always used in his diesels and read it was safe for gas engines. All I can say is WOW!!!!! I did the cold air intake thing, the throttle spacer thing,…ect. and never really got any gains other then noise and sounding like small junker car wishing it had a V8. I never could make it home on one tank of gas between Fredericton and Dalhousie but I faithfully always put a cup of treatment in the tank before departing to and from, there was always a full bottle under the seat. There was always a noticeable difference in throttle response. The thing I noticed the most was the decrease in having to find a lower gear on hills. Now, the biggest difference came from when I had about 50km to go and had to stop and fill to make it home. I never did put the treatment in then, but this were the Jeep was a completely different vehicle from there on out. The sluggish returned… BUT I had a fix! - Kyle G., New Brunswick, Canada

After treating the engine with Lucas Upper Cylinder Lubricant, the Check Engine light went out and never came back on again.

I had a check engine light for bad oxygen sensors. The mechanic couldn't change the oxygen sensors because they were frozen in place. We have no emission control inspections, and there was no effect on engine performance, so we decided ignore the problem. However, after treating the engine with Lucas Upper Cylinder Lubricant for a period of time, the Check Engine light went out and never came back on again. -Charles T., Lakeville, MN

I can definitely feel the difference...

I use the Upper Cylinder Lubricant with Injector Cleaners product every time I put gas in my 2013 Harley Davidson Ultra Classic. I can definitely feel the difference after 1/2 bottle of this in there. Bike usually feels sluggish in warmer temps; always ran real good in cooler temps; but with this stuff, runs just as good in warmer temps. Pulls hard too. Not sure what's in this stuff; but it works! -Gus G., Chandler, AZ

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