Matt -
I tried a trick once. I put in 0-0-0 for Miles-Gallons-Cost in order to try to insert a "mod between fillups" gaslog entry. It didn't effect my MPG calculations. The 0-0-0 entry didn't even show up on the chart as a "mini dive" in the data.
However, the next day, the 0-0-0 entry was gone from my gaslog
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. This leads me to believe that you have a "null gaslog entry culler bot" in your gaslog code.
If you just left the 0-0-0 entries alone, at least they could serve as simple "mod log" entries.
CarloSW2