4.5kg Powder on tractor fuel tank. 9kg powder on baler pull on right hand side and 9kg powder on left hand side of bale chamber. Only thing I was told with powder on machines is it can settle from all the vibration so occasionally you need to turn them upside down and shake them. Dont know how true this is??
Dont get powder ones, the vibrations set the powder solid and it dont come out!
Exactly what @ACEngineering said in the thread I linked to above…
Best type to carry in tractor baler. Powder water or foam?
I would say foam powder is a bugger to clean out of a cab and seems to kill electronic components if they where not damaged by the fire already .
that said either is better than nothing