A gas cap seems insignificant as far as automobile parts go, but it's a key part of your automobile's emission control system. Choosing the right replacement cap helps everyone breathe easier.
Bring your car's year, make, and model with you to the auto parts store.
Step2
Check a reference manual or a supply store's computer database for the type of cap your car needs.
Step3
Select the type of gas cap specified. Don't substitute another kind, even if it looks and feels OK.
Tips & Warnings
Don't drive around without a gas cap - it's unsafe for you, your car, and the environment.
The closed-fuel system of a new car reduces pollution by forcing vapors into a recovery canister. Pick the wrong cap, and you'll end up with vapors escaping. A snug feel is not enough. Even a gas cap that goes on readily and doesn't wiggle can have an imperfect seal.
on 1/25/2006
Although they are sold at a lower price, auto parts store gas caps are not always the best choice for today's computer-controlled cars. If an aftermarket gas cap does not seal absolutely perfect all the time, it could cause the "check engine" light to come on. That is an automatic failure at inspection time. I support my local parts stores, but something like this should come from the dealer. Happy motoring!
Comments
shellydintexas said
on 8/22/2008 Does it affect the gas mileage? Doese it evaporate if it's not the right one?
Anonymous said
on 1/25/2006 Although they are sold at a lower price, auto parts store gas caps are not always the best choice for today's computer-controlled cars. If an aftermarket gas cap does not seal absolutely perfect all the time, it could cause the "check engine" light to come on. That is an automatic failure at inspection time. I support my local parts stores, but something like this should come from the dealer. Happy motoring!