I haven't compiled the fuel data yet. I pushed a 20+ MPH headwind for almost 400+ miles - really ate into any savings. While in a protected area on flat road and not other traffic I was getting 22+ instantaneous MPG readings. I cannot attest to the block being the bonus or 60 MPH.
As a note, all 7 blocked shot the water temp to 230 and beyond, so a quick stop and I pulled the center block, then the temp returned to the 208-211 range which is more typical.
Eyeball estimate is about 20 MPG, but won't know until I enter the log data.
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