I have a 2006 LBZ with 177,000 on it and have had numerous glow plugs replaced over the past 10 years (I bought it new). Earlier this summer after a 2,000 mile trip towing my 5'er I had another one fail as well as 1 injector. The dealer was told to only replace the one glow plug and obviously the injector, but somewhere the word didn't get to the technician and he replaced all 8 glow plugs. Since it was clearly written on the work order I got all 8 glow plugs replaced for a reduced cost on them plus zero labor. The cost of the injector was another story $$$$$.