Polytron Gasoline Diesel Fuel Conditioner (GDFC) 12oz (354ml) Bottle - Military Industrial Grade

I have used a few other fuel additives such as STP ultra, Chevron, and 401 but polytron has been the best so far. I didn't really notice anything much when I added it the first time on a full tank so I was skeptical about the product. But on the second time I added it to another full tank of gas I noticed much better startups on these cold winter mornings. Not to mention better response in acceleration and somewhat improved fuel economy I haven't used the whole bottle yet but I'm sure results will surely improve and make the fuel system more efficient and reduce wear. I have been using the polytron mtc oil additive for almost 2 years now and that also worked wonders especially combined with the fuel treatment. I wish I would have tried the fuel conditioner sooner. It's a bargain for the price and can be used a few times since you ad 2 fl oz to 15 gallons of gas. I also like that it shows the fl oz measurement too, that way you know how much you use. My only downside to this was that it says its a 12 fl oz bottle which it is, but they rip you off on 1 fl oz and they give you 11 fl oz instead. I would have to say that the quality of this product is reassuring though and makes up for that. I recommend this product, especially in combo with the polytron mtc oil additive.

I think it improved my MPG in both 2012 Odyssey (160,000 miles) and a 2005 Suburban (230,000 miles), by about 10-15%. However, it seems to have had an annoying effect in my suburban. It reacts with the new fuel coming in so immediately, that my last 5 fuel fill-ups took at least ten minutes each, because it bubbles the fuel so much that the gas pump auto-shut off engages after each half gallon as the bubbles try to come up the fill tube. I then have to wait for the bubbles to calm down before adding the next half gallon. It does not happen with the Odyssey. Perhaps with the suburban I put in the Polytron when the tank was too low on fuel, and the Polytron adhered in-concentrate to the side of the tank? I'm not sure, but it is annoying.

Guaranteed to extend your engine life by 300%. I used it in three old cars, one twenty years, one 17 and one 8. Each one has incredible and noticeable improvements right away and over time. The Infiniti I used it with had already been using it for years and was 20 years old already when I purchased it. I continued to use it, and only after being off it for a couple months did I start to feel the normal engine life span. Grow

I was using 2 quarts of oil between oil changes consistently when I decided to try Polytron and I couldn't be happier. No oil use yet, no more smoking, no more ticking. This stuff is well worth the cost. I'm going to put one in my transmission when I change the fluid. Great job in the development of this product..

It extended the life of my gasoline fuel while at storage tank.

Jury still out...though my first tank in my V8 Northstar in-city driving registered about 18mpg. Not bad. I'm waiting for results of hwy to update. Update 4/28/16 - I've used periodically and seem to have consistent good gas mileage. Seems this fuel conditioner is due credit as least partially.

Unlike their oil supplement the gasoline one is worthless. Used it for few tank fill ups as required drove 1000 mile since, if anything I see an increase in consumption...

It works well with my 2002 E430 mercedes. I suppose it lubricated the upper engine since I felt better response in acceleration. I also used the Polytron MTC and the spray lubricant. I'm satisfied with Polytron products so far.