i've had a can for at least a few months now i've never used. mostly because of i've seen how it smokes. I would like to try it but not real sure how well it works. Its a pretty abused honda so it might work well for it but maybe i'll try it at my warehouse's parking lot someday. Only thing that sucks there is the fire depo. stores trucks and has training there, i'd be so pissed if someone called the fire depo.....