Treated fuel question

[Avenger]

Couple of fine points here... While many people use the term it's not really algae, it's bacteria. Just a semantic thing but a point, they're animal not vegetable. Keep in mind water can come from other sources than the fuel supplier. On boats probably the most common is deck fills with failed O-rings.

Next, a semantic thing you probably didn't intend, but emulsifier in a diesel is an evil thing. This blends the water into the fuel so it can bypass filters and get into your injection system. You want a demulsifier that will cause the water to drop out of the fuel so your water separators can get it. Water in fuel injection has the same effect as sand. And some additives do have emulsifiers so read the label carefully.

[SEVEN]

Learning a lot here. Thanks

[Top Hatt Craig]

Excellent points, another source of water in our tanks is from condensation, a vented tank that is less than full will breath air in and out with temperature changes. Tiny droplets of water condense on the walls of the tank and fall into the fuel. Condensation can be minimized by keeping fuel tanks full if condensation is a problem.