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Showing results for tags 'accuracy'.
I have an 1997 Chaparral 1830SS with an 4.3 liter V6 Mercruiser engine. The gas tank holds 30 US gallons according to info. from several online sources. I want to use up as much of the current ethanol additive gas now in the tank before I fill up with NON-ethanol. My question is assuming my gas tank sending unit & gas gauge are "reasonably" accurate, how much should I use up before refilling to get maximum benefit from the non-ethanol diluting the current ethanol blend. Next question: Is it likely the gas gauge will drop by 1/4 when 1/4 tank of gas is actually used. Meaning how much can I