Drive slower (which you should be doing, anyhow, since most motor home drivers I've seen do NOT have the skill to be operating those vehicles at the speeds I've seen them operating at). If you have a petrol motor with an overhead valve (which most American motors are), try to keep your RPMs at 2000 or less. If you have a diesel motor, try to keep your RPMs at 1500 or less. Decrease the weight of the vehicle. Do what you can to streamline the vehicle (including any trailers you might be towing). Ensure your tyres are properly inflated.
I get nine mpg on the road with mine.
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
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.
You'll want to look for a performance air filter. Basically these increase gas mileage by increasing air supply. The more air which is available and circulating, the better the overall gas mileage.