false. that s one i hear about a lot. if you look at the side of a tire there are all kinds of numbers there that give you specifications. serial numbers, names, size. tread wear. this is information about the tire, not the tire on the car. that information, you want to look at a sticker located in the driver s doorjamb. that will tell you what s appropriate for that tire on that car. you go out in the 20-degree weather and open the door and look at the door itself? right. it will tell you exactly what it should be. maybe take an iphone picture of it so you have it. not a bad idea? not bad. if regular grade fuel is good, premium, of course, must be better. sounds like it makes sense. does that make sense? intuitively premium sound great but the reality is the vast majority of cars, regular is just fine. the key for this information is look inside the fuel filler door. it will say one of three things. it will say regular, in which case is the answer.
don t need the premium. you can save a little gas money there. basically, inside the fuel filler door, it will say either premium required tore proposal yum recommended or it won t say anything. if it says premium required, then you want to use premium gas. if it says premium recommended, then you don t need to. arthel: you can go to the one lower? yes. arthel: so minimize driving with a cold engine. basically if you re going out and you have a bunch of errands to do, one of the things we found that cost the most in fuel economy was restarting the car all the time with a cold engine. so if you combine all of those trips into one, make a few stops, if you stop for a minute or two, the engine won t cool off that much. rick: what about the tires? the amount of air in your tires could have an effect. the amount of air in your tires, if you are down ten pounds of air in a tire, that will also cost you 2, 3 miles per gallon. the more important thing is safety with keeping your