Engine Warmup - General Driving or Towing?
Posting Guru
Joined: Jun 2018
Posts: 1,366
Likes: 186
From: Frederick, CO
I only idle for my personal comfort. If it's 0 - 20 F and I'm leaving work (i.e., my truck's been sitting outside for 10 hours), I'll start my truck 5-10 minutes before I leave my desk. Gives it a chance for the built-in hair dryer to kick in and warm the cab a tad. That's it. It's for me. The engine is fine. It's not a 1997 PSD. Per the manual, when temps get extreme (-15 F is pretty extreme for most folks), the engine requires some idle ... but, again, I'd be doing this for my own comfort as the primary motive anyway.
Tuned
Joined: Aug 2010
Posts: 275
Likes: 30
From: Metro Detroit
I only idle for my personal comfort. If it's 0 - 20 F and I'm leaving work (i.e., my truck's been sitting outside for 10 hours), I'll start my truck 5-10 minutes before I leave my desk. Gives it a chance for the built-in hair dryer to kick in and warm the cab a tad. That's it. It's for me. The engine is fine. It's not a 1997 PSD. Per the manual, when temps get extreme (-15 F is pretty extreme for most folks), the engine requires some idle ... but, again, I'd be doing this for my own comfort as the primary motive anyway.
Tuned
Joined: May 2003
Posts: 303
Likes: 2
From: Kentucky
as far as bearings... there are many different ones as far as material, some babbit, some steel rollers, flat rollers, and so on. The real issue is that they all grow at different rates based on the material they are made of. A full steel roller bearing, especially if it is very large will take much longer to heat up and grow to what size it should be for normal operation. This is why time and load are important. It all needs time to heat soak and all come to temps before really loading anything in the drivetrain. Not just the engine.
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