Well my 6k mile fuel filter change came due and in this time frame I used about 5 tanks of bio. Usually when I change it the fuel looks kinda like Gatorade, kinda yellow/ greenish. When I noticed the color of the fuel I could not believe it
The fuel was colored more like coffee and the filter was some kind of brown and very dirty, more than it usually is. Also there was some kind of crud at the bottom of the fuel filter canister. Not much at the bottom but you could see it and feel it, was no problem getting it out. Guess it's true about Bio it will clean your fuel system.
I have been pleased with the bio so far. Mileage is about the same, engines is a little quieter, smells different out the pipe and actually it seems that it is a little more responsive. Sounds crazy but it does, feels like it has some pep to it now. I will be stepping up to a B50 blend as soon as the pump is put in. I have read about bio holding water and it could get into the fuel system, that may be wrong with different types of oils that are used. I am using cottonseed oil and diesel. When I drained the fuel from the filter housing I saw no water or what looked like water. If there was some in there it was a small amount.

The fuel was colored more like coffee and the filter was some kind of brown and very dirty, more than it usually is. Also there was some kind of crud at the bottom of the fuel filter canister. Not much at the bottom but you could see it and feel it, was no problem getting it out. Guess it's true about Bio it will clean your fuel system.
I have been pleased with the bio so far. Mileage is about the same, engines is a little quieter, smells different out the pipe and actually it seems that it is a little more responsive. Sounds crazy but it does, feels like it has some pep to it now. I will be stepping up to a B50 blend as soon as the pump is put in. I have read about bio holding water and it could get into the fuel system, that may be wrong with different types of oils that are used. I am using cottonseed oil and diesel. When I drained the fuel from the filter housing I saw no water or what looked like water. If there was some in there it was a small amount.