Break, curse, fix, repeat
Join Date: Feb 2007
Location: Bainbridge Island, WA
Thanked 2 Times in 2 Posts
Rep Power: 11
All good advice. My experience has been that running a high % biodiesel has left my tanks utterly clean, not to mention nice smell and happy engine (have been doing this for 5 years and 600 hours). I changed my Racor and secondary filters every 100 hours or so for the first year or two, but they soon became so clean it was pointless. I don't have an inspection port, but I recently had to replace my sending unit and so took the opportunity for a little inspection.
I looked in with a bright light and seemed to see the bottom clearly. I then inserted a clear hose down to the bottom and plugged the top to see what it brought up, and it was pure fuel. I then agitated the heck out of the bottom of the tank with a long stick and sampled again, and it was pure fuel.
Before this I had also self-polished the fuel by putting the output from my fuel pump into the tank and let it run while I agitated the bottom of the tank. This let all the fuel go through my primary Racor 2 micron filter. Nothing really showed up in the bowl or filter when I changed them afterward.
So I don't have any experience with cleaning the tank other than what I describe here, and enthusiastically agree that all efforts at clean fuel are worthwhile. It is an irreplaceable peace of mind to not worry at all about plugged filters or fouled injectors.
Good luck with yours.
Bainbridge Island, WA
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