RE: PUMP SPRAYER HELP
antifreeze will do a nice job of maintaining your pump diaphram and seals. That assumes you have not run a xylene based chemical anytime through it if it does not have Viton seals.
Lots of the small cheap ATV units are sold with a pump that does not have Viton seals and diaphram. If they dont, then some chemicals will degrade the seals and next spring you will have pump problems...in any case run a bit of old styleantifreeze through it