Cobleskill
Treehouser
Back in the day I raced motorcycles. I raced heavyweight super bikes. My mechanic was a cool dude, crazy old dump truck driver that had an IQ through the roof and could shoot the balls of a knat at 1000 yards. He apprenticed at cummins as a diesel mechanic. He always schooled me on how to treat a motor, especially a diesel. Always warm her up and always cool her down. He maintained that 90% of engine wear was at startup. My wheel loader with its 27hp diesel idles all day long, Im not going to start it 50 times a day. Maybe Im just old school, makes me cringe to think of all these new cars that constantly shut off their motors....... But I've never heard about their motor blowing up.
I believe that most wear does occur on start-up, but have changed views on sitting warming up for 5 or 10 minutes. My Dad used to fire up a big diesel tractor and go right to all out work mode. Did that for 40 some years without a major breakdown or early engine failure. I let them warm up for a minute to get oil flowing and then go easy on them till they are up to temp. Same as recommennded for motor vehicles these days.
A lot of heavy equipment won't cycle hydraulics when very cold-one reason to let them warm up.