Rick, the 4200 does indeed like to run at the 210-220 mark and does it with no problems, overall, its a very good engine, smooth running and lots of power considering its a 6 cyl. One thing about these engines is that they do NOT like dirty oil. They use variable timing on the exhaust cam and the cam phazer is pulsw width modulated to allow oil flow, any restriction can cause issues and potential problems. Not trying to scare, just to make sure your regular on your oil change schedule, I dont feel its necc to advise most of the people on the board of regular maint as we all seem to take excellent care of our vehicles, but when they come in the door at the dealer, we literally have to pound that in to the customers head..
I welcome questions from other GM products as well, even know this forum is primarily a Duramax section, We all have second vehicles.
I welcome questions from other GM products as well, even know this forum is primarily a Duramax section, We all have second vehicles.