Posted 7/5/2015 19:46 (#4663022 - in reply to #4662893) Subject: RE: WinField Interlock
NW MN
First season using it this year. I'm a firm believer in it after I left it out of a small tank load just to see if I would notice. I sure thought it made a difference. I also like it because you don't have to worry about your tank turning to sludge if you over do it