that sucks. another one lost to owner abuse

If WVO is so good, then why did my Stanadyne FM 100 block the WVO? It lets pump diesel and B100 flow all day.

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RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K

The return flow is fairly significant. I discovered a crack in my return line this week that could have made a terrible mess. It was pooring out and dripping down the side of the motor. Probably 1/2 gal per minute. This was from a crack in the hose at idle. Full flow is going to be more.
Based on your description it seems you are running a system that results in blending diesel and WVO. I know this is not your intention but if you leave it as is you might as well elimnate the complexity and go back to a single tank without the selenoid valves( not a good idea). A better way would be to plumb the WVO set up that either loops back through( good to maintain heat) or has a dedicated return to the WVO tank.

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81 300D Turbo 190K sold
83 300sd 319K best $500 I ever spent-daily driverw/ 2 tank WVO set up