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bob camire 03-01-2005, 05:20 PM Some of you guys are quite knowlegeable regarding Gm in general. ( no pun intended) Anybody know how long they run in these Duramaxes at the factory ? Any other related info around this would be of interest..thanks, bc Mike Mac 03-02-2005, 08:47 AM Jim Bigley typed in an article about the Durmax plant in Ohio, that each engine is tested for 10 mins. The engine is artificially warmed up for 2 min. Then run at rated power and held there for 6 mins. while different systems performance is checked. Then the final 2 mins. at idle an operator checks for leaks or noises. The engine is then shipped complete with injection system either flywheel or flexplate and all engine electronics. diesel66 03-02-2005, 10:17 AM 6 minutes! Doesn't seem like very long? Frank Blum 03-02-2005, 11:36 AM It will get quite a bit more run time on the GM assembly line. The rings will be seated by the time you drive it. Later! Frank bob camire 03-02-2005, 08:58 PM Franks, i would hope the engine is somwhat run in..as we all know, 50 percent of all new vehicles are traded between dealers..som quite far away..those sales guys are not gonna baby it under 50 mph by any means !! :grd: very interesting...i would have thought these engines get rin in for a few hours..maybe not the case..thanks for the replies | ||