Tim, if your HHO is not treated, go get some deisel fuel conditioner and treat it. I dont know if mine was or not, so I got a quart of conditioner and 4 gal of kero. Mixed them up then dumped the kero/cond mix in on top of 150 gal of HHO. In NE PA where I grew up, HHO was treated. Try either a auto parts store and just read the lable and add additive to the amount it says. I like to mix it with something before I dump it in and 4-5 gal of kero wont hurt a thing in 150 gal of fuel oil.
Hasn't gelled yet and the tank is outside. BTW, you really dont want to get your HHO gelled, been there, done that. I think it was Dec of 1979 or 80. Brutal cold. Brrrrrrr
As to using it in the tractor. Go to TSC and get a hand pump, fill er up and go. Thats it.
It is the same stuff. There is a screen on the bottom of the pump that would pick up any big chunks if it is in HHO or On road.