only type I've used and had pros recommend is the dual tube "premix" that measures out the correct amount, like these, I'd be leery of mixing by hand, the amounts are more critical than with things like JB Weld
"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir "When we tug a single thing on an old truck, we find it falls off" ~ me Some TF series details & TF heater pics
