With fuel additives you need to be very careful. All of them will claim to increase gas mileage, and some can, but the majority do not. Some even decrease it. Fuel catalysts are a better bet, but you need to choose the right one. Do some research and find one that seems reputable, has some testing and research to back it up, and has been around. I use one in my Jeep called Fuel Infusion - www.fuelinfusion.com. I've seen around 10-15% increase in fuel economy. It has some other benefits as well that you can check out on their website. Give it a shot, if it works than it's worth it.
Anyway, good luck.
There is no fuel additive that will increase mileage. This is a myth. None of the snake oil additives work.
Yes, higher octane gas does give higher gas mileage for your car. However, the increase in gas mileage may not as great as the increase in the price of the higher octane gas.
No, it will decrease gas mileage.
Spoilers decrease gas mileage. Spoilers are designed to create down force, which creates drag. The drag will increase gas usage.
There are some practical ways to increase the gas mileage but you can use also Fuel Infusion what is a powerful fuel catalyst. Fuel Catalyst realy helps to increase to boost your engine power and your gas mileage.
False
By adding a fuel additive in the gas tank you are going to get better gas mileage. It cleans all the injectors and all the fuel lines and the rest of the system.
No it will not give you better performance or increase gas mileage. Gas mileage and performance will decrease only if you use it. leaving it off is like not having it at all.
yes
Not unless the engine using it was specifically designed for it. Gas mileage takes many things into consideration, and if a car is designed to use standard octane gas, the use of high octane gas will not increase the car's mileage - it is just a way of figuratively blowing dollar bills out of the tailpipe.
depending on your driving, it could increase up to 4 or 5 mpg. But gas mileage will be determined by driving style.
No, friction decreases gas mileage. If you are talking about Friction motor treatment then it is just another in a long line of products claiming to increase mileage. None of them work, period.