Why is my truck battery keeps dying?

I checked everything in my truck 92 ford f150, It didn't have this problem until 3 days ago, also three days ago i let my one of roommates have some change out of my truck, and i didn't know if the dome light came on overnight, but i bought a new battery for it (everything is new in the truck) monday night, now tuesday night it won't start, it will not crank over, never had this problem with it, it only has 173k on it too.

How can I get better gas mileage?

I have 97 Ford f150 5.4 with tow package and extended cab is there any way I can emprove my millage I have true dual exhaust and that's about it highest I gotten was 300 a tank and low is 275 please help it's draining my pockets bad intill I fix my Honda accord

Ford f150 got dirty fuel. How can i flush the fuel lines?

I gassed up at a gas station and a quarter mile of driving my truck started running poorly and it got worse and worse until it didn't want to run anymore. I checked the fuel filter and brown gas came out I replace the fuel filter and injectors with spare ones and I ran great so I know I have dirt and my fuel system how can I flush out the fuel lines and clean my tank?