Having used3 in 1 oilfor 40 years to care for a Winchester model 12 with a father who's done the same for 50 years with a Browning A5, both of which have been hunted hard for ducks in rain, sleet and snow and both of which are in excellent condition, I'd say it'sgreat gun oil. Not that there aren't other oils out there which are just fine. I can't say any are better and won't have enough years to prove it.