I'm pretty sure the Mercedes Benz OM603 is, I personally have had one with over 250K miles on it
1987 model year 300D
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2003 Dodge Ram 2500 4X4, PDR Cobra Stage 2 Twins, BD Power 90's, Studs, Springs, Autometers, Dual 7" Black Stacks/rain caps, Banks intercooler, Goerend Full Built Trans, Smarty set to Kill, MP-8, Full DIY CP3 Mod, Rail capped, FASS 150/150, and big line kit.
