Quote:
Originally Posted by ssnsvibe09
2013 GMC Seirra 5.3 with no acc on in park. I recently measured at 1.919 LPH after a thorough warmup from a stone cold start. The fuel burned to get the engine warmed up is mind bogling at a total of 3 Liters in 18 minutes. Where a hot engine would only burn 0.58 liters in the same amount of time.
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1.919l = .51 gal U.S.
3l = .79 g
.58l = .15 g, or
.45 to .5 gallon/hour idling when warm
.8 gallon during 20 minute warm-up from cold
This is useful to me because there is a sea of V8s autostarted and idled around here for 6 months out of the year. Now I can attach some numbers to it all- probably a gallon for each autostart event because it is plain to see most last longer than 20 minutes; and 1/2 gallon per hour from then on, like at the local parking lots.
