Increase fuel economy?

Question

making a list for saving fuel please tell me what modifications can you do to a car to make it more fuel efficient, I already have:

1.better driving habbits

2.increase air flow in and out, (intake & exhaust)

3.check alignment

4.check tire pressure

5.lighten the load

6.remove roof racks

7.windows closed

8.use correct oil for your car/use think synthetic oil

i wish to make a bigger list, please do inform me with ideas, even weird stuff that you have thought of when you're bored

Answer 1

don't use AC...use the fan  

Answer 2

avoid if possible congested areas cruisin @ 55-60  is optimal fuel efficency thats was the real reason for speed limit imosition in 1970's ( along with a way to get money ) not safety as the propaganda says

Manual transmissios get better fuel economy

use cruise control it helps a bit

not using heat/Ac ( even at these bushwhacked prices u dont save enough to warrant discomfort but if its like 70 no need for Ac or heat at 60 )

Answer 3

Keep your car tuned up.

Combine your daily trips.

Performance chips

throttle body spacer

I drive a crew cab utility bed 1 ton diesel truck on 37" tires (weighs over 11,000lbs) and I have done intake, exhaust, power chip, synthetic oil and I keep the tire presure at 48psi. The truck averaged 11.8 mpg when I bought it. After I did everything to it, I now get 14.8mpg average.