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Bland
Join Date: Nov 2003
Location: I'm 'out there...'
Posts: 8,787
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Quote:
Originally Posted by Don Ro
Back in the old days they'd let Diesels idle over night.
Anyone know why? Hard to start in the AM?
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In places outside of Arizona, it gets below -40. Old diesels with old oil technology wouldn’t start in these temperatures. Even if they did start, the old school 30 and 40 wt oil they had back in the day wouldn’t circulate at these temps.
It was felt that it was easier on the engine and less costly to just let them idle over night.
Of course with today’s DEF systems, excessive idling is a no-no because you need engine heat to keep the catalysts hot.
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