DURA LUBE Severe Fuel System Cleaner | 16 oz., Single

Excellent fuel handling. One bottle and the car's power was back immediately.

I've used this product for years in all my vehicles, including my 2001 Dodge Intrepid R/T. Without hesitation, I put a bottle in a full tank of fuel after every oil change, (3K-5K) to maintain the entire fuel delivery system from the fuel pump to the injectors. Though my car has over 184K miles, the 3.5 V-6 H.O. engine runs smooth, idles quietly and accelerates hard as if she was still new...I truly believe in the effectiveness of this product, as well as the DuraLube Engine Treatment product. It also is noteworthy, to know the brand was founded in 1986 and the corporate office is still in Gahanna, Ohio....it's truly a first-class American-Made product, your vehicles best friend for longevity of its fuel system operation along with improved fuel economy and performance as the result...bravo!!

Seem to help my lawn tractor and car.

Great product used it for years but I switched to Sta bil 360

This product shuts off my engine light when it indicates catalytic converter. The truck works great and passes smog checks with ease. I'm comfortable using this product every 6 months or so especially that it seems to satisfy whatever issue turns on my check engine light.

I used this on my wife's 2008 Honda Civic Si (150k miles), and the hesitation/rough acceleration problems, and engine pinging/knocking noises under acceleration were resolved within the first 10-20 miles after using this. I also used it in my 2017 Honda CBR 1000RR motorcycle for similar problems, and I experienced similar positive results! I will continue to use it as part of our vehicles regular maintenance.

Two bottles of this stuff and my check engine light PO420 error came back. Does not seem to have any effect on the catalytic converter

I was very impressed with the product I started to notice my fuel economy getting better within a couple of days. The car runs a lot smoother and it doesn't feel like it's clogged down. I will definitely be getting this product again I think it's well worth it and great for your car.