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oil temp vs fuel consumption
I guess the question I would like to see a definitive answer to is:
Is the fuel consumed in running an engine at idle for a minute more than offset by the reduction in fuel consumed because of the warmer oil?
Yes, obviously the fuel consumed is "wasted" because it doesn't move you down the road, like the example of the winglets on the airliners. They add drag, they produce no lift therefore they are bad, right? Wrong, they improve the lift by keeping the airflow over / under the wing without it slipping off the end of the wing. Can the fuel burnt by idling the engine a minute improve the efficiency when the engine is under load enough to pay for itself?
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