have you tried your atf blending yet? i havent burned much atf but i can tell you that alot of injection systems react differently to wmo. one of the guys on here was running 100% in his psd. if i tried that in my motor it probably wouldnt run at all. anything over 25% in my engine and it sounds like its trying to eat itself. the best advice i can give you is dont top off the tank with atf/wmo. make sure you have room in the tank to add diesel to thin it out(kero works well to thin out wmo-but i havnot fully tested it to be comfortable with it)kero has less lubricity than diesel but i think the wmo may counter act that. also if you have the ability, it is better to mix your blend prior to putting it in the tank. some people say that driving it mixes the blend just fine but i have found that when running the most wmo i can, my idle quality and performance is better, if mixed before putting it in the tank. also dont get carried away when upping your ratio, up it slowly, in my rig the difference between 25% and 27% is considerable. since your using it for agriculture you dont have time for "down time" so i recommend finding the ratio that works best and then cutting down the ratio by about 5% this way you dont have to spend so much time making sure its just right.
however, if your rig is like some engines, then it a almost burn anything.
but i do recommend pulling your injectors after a couple of months of blending and have them tested. if their is conciderable wear on the injectors then your IP is probably getting worn also. either stop blending or refine your filtering process.
sorry so wordy-just trying to relay what ive learned.