I've been running a 50% WVO blend for a couple weeks now and have noticed a strange pattern of power loss
In short as the fuel tank level drops, power drops off noticably. As soon as I add fuel engine performance instantly returns.
Each time this cycle repeats, the power loss occurs at a slightly higher fuel tank level reading. Now it happens just below the 1/2 tank mark.
It appears that switching back to 100% diesel has a minimal effect on the power loss cycle. At best it seems to push back the power loss to a lower tank level but it still occurs.
My current theory is that the veggie oil is cleaning the fuel system and 20+ years of tank gunk is coming loose and starting to clog the system
By refilling the fuel tank, I increase the fuel pressure against the tank screen to help push fuel through until the fuel level drops and pressure drops with it. Also as fuel level drops the IP can't suck enough fuel through the filters either as the tank pressure pushing the fuel forward drops.
I bought the car a couple months ago. I have NOT yet changed either fuel filter or check the tank stainer. My plan was to run a few weeks with the blend and them change the filter after the expected tank cleaning the veggie oil will do. 200K on the car. The car ran super strong when I bought it and continues to run strong on a full tank of 50% veggie.
I hope to make it to the weekend before pulling the strainer and filters this Saturday.
Any bets as to what I will find???