Well I bought a new lift pump from advanced auto and it is airtex I believe. The pump worked fine until I realized it was leaking oil from the middle of the pump where it looks like 2 pieces. I was loosing up to a quart of oil every 20 minutes of idle. Have any of you had this problem. I checked my oil for diesel but it doesn't smell like fuel. Luckily they replaced my pump no charge but I am going to keep an eye on it and if it happens again I will probably get either the more expensive bosh pump or switch to an electric fuel pump.