I'm relatively new to Diesels - bought my dmax to pull an rv a year ago. So far 12k miles and fine (finger crossed.) In reading another scary thread about failed injectors and turbo, mention was made of the fact that you should always let the engine cool down while on. OK, this is something no one ever told me. Certainly know a bunch of people who have turbocharged gassers (performance cars, not trucks) and no I knew ever worried about this. Yes hot fluids sit in the turbocharger, but hot fluids sit all over the engine after you drive. Not always exactly convenient to sit in the truck for a while. How important is this?

If your even close to stock and have not been pulling the gut's out of it immedately prior to shut down, you probably don't need to idle it and let it cool prior to shut down. Our turbo center section is water cooled whick cuts down greately on the need to cool down prior to shutdown. However I am of the opinion that ANY engine will last longer if it's allowed to warm up to operating temp prior to being worked hard and allowed to cool slowly prior to shutdown. My .02

Thanks a64pilot - in general after tough towing I automatically cool down because I have to unhitch my 5er and get things going, so I guess I'm covered here. It's the shorter rides around town - turn off, jump out.





Steve

i always let mine drop to about 300* or so... if you're really worried you can get/make a turbo timer..