sounds good for me then 365 on not quite 10 gallons which is about what 38-39 mpg but it evens out to the cost of probably 30 mpg with all the money i spend on oil. speaking of which does anyone know how i can tell what head i got on my motor cuz the guy that owned it before me used half of two different motors to make 1 motor and i know the block is a 1.5 but i dont know if the the head off of a 1.6 or 1.5 so i dont know what head to buy....any help??