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Old 07-27-2011, 06:48 PM
Dymaxion Dymaxion is offline
Motorized Bicycle Senior Member
Join Date: Jan 2010
Location: Michigan
Posts: 67
Default Opti2 and fuel filter darkness

I recently rebuilt my motor with a new top end. I decided to break it in with opti2 and I also added a see-thru fuel filter at the same time. After about 25 miles here is what what the fuel filter looks like:

Is the dark layer at the bottom normal? Is this some type of opti2 sediment?
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