Beat a new Drum
I rarely start Pepper for a drive under 100 miles. Rarely, not never... Why?
How much time and how many threads I've I spent talking about the reduction of wear? Yea...a lot. News flash. Those discussions fall into the 25% of the engines total wear you have the most control over. After it's heated up.
75% of engine wear happens between ambient, cold start, and 160 F+. Not just water temperature but bulk oil temperature as well. Oil takes a much longer time to bring to fully warmed up than does the water.
SAE Tech Paper 2006-01-3413 (One of the GM studies)
SAE Tech Paper #600190 Standard Oil wear during cold start
Ring/bore life is the limiting factor in overall engine life, not bearing life. Ring and bore life hinge on the oil, oil condition and in its operating environment, the number of miles PER COLD START, and load. Yes there are more factors but these are the heavy hitters.
OTR engines get a cold start or two a day and then are run for 400-600 miles. Soccer mom's van almost never attains 160 F oil temperature between starts. One goes a million miles the other ??????? Go figure