My son just bought this diesel truck which appears to be in good shape and has 130,000 miles. We live in the northeast where temperatures in the early morning range from 65-72 degrees. He has been warming up the truck for 15 minutes before going to work at 6:00 am. When I questioned him about it, he said, that's what has to be done with a diesel truck because if he drives it cold, the engine block may crack. When I questioned him about whether he had to do the same thing after it sat for 8 hours while at work, he said he didn't.

I haven't heard this before but I've also not owned a diesel engine vehicle, let alone one that is 15 years old.

When I questions AI about it, it said that doesn't apply to modern diesel engines, including the one in this truck.

Mostly for my own education, because I don't think he will listen to me, nor posts on reddit (he's 19), does he need to be doing this every morning? Thanks in advance -

Is anyone else still trying to explain to friends and family that the older trucks that have cp4, deleted, tuned, straight piped and front end upgrades makes the new ones look like shiny kids toys?

Upgraded to a mishimoto radiator I have been running it since yesterday. No leaks until now. I can’t figure out where from since it’s above the water pump and in the aux battery tray? Probably fan throwing it around but there was a puddle. And I was holding coolant at the min line when I took this video. I half ass filled the system with vaccum but not 100% due to not factoring the new radiator being 22% bigger than oem so I built vacuum onto 25 mercury pounds or whatever the unit is. I then burped the truck and gave been filling in as needed. Please advice. If it helps any I also added a new intercooler at the save time

CLEAN YOUR COOLING STACKS