AirDog! The price is better the product is better quality IMO and the customer service is second to none. Plus the owner is one hell of a nice guy, I've talked to him personally 4 or 5 times at about 15 mins a pop.

 

Can't go wrong with either FASS or Airdog

 

I don't think ULSD is killing the Walbros.

The pump was designed for use with gasoline, which has allot less lubricity.

I would believe exposure to debris, before ULSD.

That said, Go with the Air Dog anyway.

They are a Manufacturer Sponsor here!