Originally Posted by Destroyer (Post 193528)

We know that fuel, even with a 100 : 1 mix is different chemically than just straight fuel. There are ways to measure it. Without really thinking about it too much, I think a sensor hooked to a microprocessor that measures the viscosity of the fuel several hundred times a second as it flows past might work. (I think that fuel with oil in it would have a different viscosity index than fuel without oil in it). You just have to monitor the thickness of the fuel. If it falls below a set parameter it would send a signal to a solenoid that would switch a valve to a different tank filled with premix in it and sound an alarm. The problem of course is writting the program. The rest is just basic mechanical stuff.

Originally Posted by jasoncooperpcola (Post 193532)

I have figured out a way using one pump and the remote tank. Without all the computer stuff. And it is stupid simple. If i had the pump, I can build a prototype with a trip to westmarine.

Originally Posted by THEFERMANATOR (Post 193533)

The factory MERC system works with just one pump, and the module is for nothing but a warning system and doesn't affect the oil injection system in any way.