BestLine 853796001177 Premium Synthetic Gasoline Conditioner - 12 oz.

The idle in my Suburban was allowing the engine to die. Especially if I let off the gas suddenly, the throttle would not pick up quick enough to maintain idle and the engine would die. This caused me to have to "feather" the gas peddle while applying brake. I took it into the shop and was told the intake may have to come off and the air-fuel devices be cleaned or replaced. I added a full bottle to my 40 gallon tank and before the gas gauge got to 3/4 full, the idle problem was gone!

I have been using BestLine for a couple years now and find it does really help with gas mileage etc and I especially want to use the gas treatment on a regular basis to try & combat the damage 16% ethanol can do to older engines, up from 10% that the EPA ordered for 2017 if our current admin doesn't reverse it...I highly recommend this product.

So I will say that I have a few years of car experience, nothing that can really back up my information that I am going to be giving, this is just solely backed with experience.I always put Lucas oil into my fuel every oil change, but after I saw the video comparing the more widely known gasoline additives to BestLine, I decided to give it a try. This bottle does a lot, so I only had to place half of it in my tank before filling up. The remaining amount I used in my riding lawnmower at home and a few other little things, but I still have enough left to put the rest in my tank in a few months.I didn't really notice a change in how the car drove, until I stopped thinking about it. The car stopped having the hard shifting issues, but has started back up again last week. It still is not as bad as what it was the first time when I got my new car, so that means it has worked...To sum it up, I am happy with my purchase because it gives me a peace of mind knowing that I at least attempted to prolong my engines life. If you want something that could very well help your engine and make it last longer for a few extra dollars than other brands, then this is the way to go.Now as to gas mileage improvements, I can’t really tell you that it has helped, or hurt. I drive about 500 miles a week and the average MPG stays about the same.- I have a 2012 Ford Fusion 4 cylinder

I have a lifted Jeep Cherokee, and usually get about 13 and a half miles to the gallon. I took a long trip after using this product, and I crap you not, I got 17 miles to the gallon on the highway. Unbelievable results! This stuff really does work! I'm definitely going to be a lifer, at using this product. I just wish they sold it in the local auto parts store instead of ordering it online. I know if I owned an auto parts store it would be on my shelf

Product may work well. I was not able to determine ant measureable increase in mileageI consider it an additive to improve the use of the gas. Ya may need long-term use to gather enough evidence of real improvement of mileage.

I split the bottle based on the ounces and added to both my vehicles. I will say on my Buick lucerne North Star 8 cylinder I felt a slight difference in performance. Both vehicles had better acceleration. Fuel seemed to live a little longer. I would definitely recommend if going on a long trip. I'm considering running additive to our fuel perhaps every 5th tank or every oil change. I recommend for increased performance, long trips.

I own jeep wrangler JK and milage is same as a tiger tank gets on good day so I tried Bestline in the tank and am getting if I can trust the computer in the jeep over 16 mpg in town before Bestline it was reading 13 mpg so it seems to work so now about every 3000 miles i will put a bottle in the tank and keep the injectors clean it can,t hurt

I have a 2010 Dodge Challenger R/T 5.7 and it felt like it was bogging down when I would drive it. I added this with a full tank of gasoline and it was like I had a new vehicle!!I took it out on the highway and opened it up a little and it has been running awesome ever since!I will be buying this at least every other month to keep my car running this great!!