couple questions, does anyone know what that o-ring size/part number

mines got half a dozen cracks in it, and gas is always coming out, u can see the gas marks on the paint.

obvously this will lower my gas mileage cause not all of it is staying in the tank but is it also not as presurized as it should be?

 

i went to autozone they didnt have anything what should i do?

 

I don't think gas cap Orings are available seperately..
You should be able to just buy a new cap tho..
It's a 'pet peeve' in places where there are smog tests, so there should be one available in parts stores.. Stant makes em but I can't recall the p/n

 

what do u mean a parts store?

 

You must be on drugs tonight.

Auto parts store, dude.

 

well wouldnt pepboys and autozone be considered parts store or is a parts store like GM or whatever?

or Napa or... whatever

and shoebox do u know the part # for that gas cap?

 

GM PART # 10164142 or ACDelco #GT174

A [auto] parts store would be Pepboys, NAPA, AZ or any other chain store. GM parts places are normally referred to as the "dealer".