STM-3 Ceramic Fuel Treatment for Diesel Engines – Cleans Injectors, Lubricates Upper Engine, Prevents Gelling, Removes Water – SiC Ceramic Technology – Made in USA (16 oz)

not only did i buy the fuel additive but TWO of their engine oil additives. almost 300 bucks for the 3 products. i am very mechanically inclined. ZERO engine problems. NOOOOOOOOOO difference in ANYTHING they claim. i should of know better. but saying that you can call them and blah blah blah...three emails, two even though amazon and nothing! i'm not looking for money back that's the funny part. maybe i got a bad batch? it was very cold when i got them all. for them to just send me the product would cost them next to nothing. so just proves to me it's crap! lab tested by who???? a 3 year old? literally did nothing! my dogs urine probably could do more. i never leave reviews, like ever! if this was a cheap thing, i'd laugh and say jokes on me. it was far from cheap! i'm pissed bc i sent very nice emails. was super cool. it's like a slap to the face. so now i blast. DO NOT BUY! the "reviews" that say anytime good are BS! plain and simple. hey...i warned you!

My car has a 1993 mustang motor and 5 speed transmission in a 1993 miata. I put both the engine additive and the gas treatment in the car at nearly the same time. The car definitely runsmore smoothly. Throttle response is much improved. Oil pressure is up 5 lbs. I am very pleased. I am planning another dyno tuning in the next few months. I expect a 6 to 10 hp increase (280 rwhp now) and an equal increase torque.

Delivered on time and seems to improve drivability of my manual Mazda 6.

Great stuff. My gas mileage definitely goes up steadily, as per my digital gauge, when I use this stuff. I absolutely love this product. My engine runs very smooth with this product. Highly recommended.

Worked as advertised. Car runs smoother and got over 33 miles per gallon on a recent trip. Not bad for a v-6 with 234,000 miles on it!

Got to use it to see the results

It seem to increase my mileage