I put them in every truck I've bought in the last 6 years. We had a PM program with them, every year they got a new fuel filter (unfortunately that stupid little expensive one from Webasto is worth it) and after 3 years we would swap the whole unit out and send it in for a rebuild (about 200 bucks) and away we'd go again. I found if the fuel filter was not replaced yearly, the fuel pumps did not live as long and they took longer to light which stressed the unit a bit.