Lucas Oil10512-12PK Deep Clean Fuel System Cleaner - 16 oz., (Case of 12)

Use this on my Cummins and it seems to regenerate less when running. Exhaust stinks though.

Lucas fuel treatment totally cleans the entire fuel system. I buy by the case you look at my tailpipes and there clean free of soot from burning to rich, helps maintain your gas mileage.

Haven’t noticed any real fuel mileage increases. We’ll see.

For our high mileage vehicle it's a must have. Super easy to use. Just open the top, flip upside down into gas filling spout of vehicle, let empty and then fill the tank with your choice of fuel. Good stuff.

Price!!!! I purchased this product online already knowing the product works. We were using another Lucas product on our daughters 96 Jeep. We upgrade to this product once and it really made a difference. We tried to switch to another product because of cost - switched back to this product but decided to buy a case making it more affordable.

I bought it by mistake. I reordered Lucas Safeguard Ethanol Furl Conditioner for my vehicles and RV. Love it.

Definitely felt the difference. My 30 year old 240sx ran smoother at idle and acceleration. Only need 5oz per tank full.

Short of taking my engine apart to take a look, I cannot say how well the product actually cleans anything. I leave that to the reviews from mechanics and other such posts. I use the product every fill up, and it has achieved a 1/2 mile per gallon increase in my fuel economy. My vehicle is a 2018 Nissan Armada. With relatively low mileage at this point, all is well with the fuel system. My hope is that this product helps keep it that way down the road.