What to do with this sludgy brake fluid?

[bigalpha]

You could pull the sending unit to see which goes to the sump. Or you could apply suction to the lines to see which one draws fuel (spit, don't swallow).

Thanks. We'll take another look next time we're working on it. It's a surprise for his Dad so it's slow going.

 

[joe_peters]

The smaller port is the supply, the larger port is vapor return.

 

[bigalpha]

Does the supply run over the top of the tank? The smaller tubing actually runs to the side of the tank, near the fill piping.

 

[bigalpha]

Got it running out of a portable gas can. We still need to do brakes, coolant hoses, new fuel lines, tires, RMS and oil pan gasket.