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Old 12-28-2012, 01:19 PM   #29
Scooby Specialist
Member#: 274499
Join Date: Feb 2011
Chapter/Region: NESIC
Location: RI
1994 5.8T Cobra
565rwhp @ 10psi


I would lean more towards the winter blend fuels likely having a lower ethanol content than the summer fuels, due to ethanols inability to burn correctly at low temperatures.

Look at how many E85 guys convert back to 93 octane in the winter...

It would also explain why I've been seeing MORE knock since the winter fuels really kicked in!
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Black94Snake is offline   Reply With Quote