Originally Posted by Codger
Have at her.
You don't have to put it all down in one post.
The information from someone that has "been there, done that" would be much appreciated.
Your point on idling diesels is well taken. Just long enough to see the oil pressures come up and fuel pressure stabilise is all it takes. It'll warm up faster under load.
You do not want to put a load on a cold diesel. Diesel engines have parts made of different materials that expand at different rates. By putting a load on a cold diesel you are accelerating wear because some parts have expanded and some have not.
As for longevity in the 100< range. Many of the diesels are rated in both hours and fuel consumed. For example the larger C series caterpillers are rated at 10,000 hours and I think it's 40,000 gallons of fuel. The MTU DDEC's are also rated to go a long time. However, I personally know of 4 different boats with 16v2000's that have come apart in less then 500 hours. Man has seen the common rail engines last 30,000 hrs in a steady cruise rpm state on ferry boats. But don't expect that in a normal boat.