no all grease is no waterproof. red hi-temp panther grease from panther industries. i used it in everything from cotton pickers to combines on the farm and my boat trailers for 30 to 40 years. i'll run 6 or more years without even checking my bearings. if you have a seal go out the water will not touch the grease or bearings. tractor supply sells a green water proof grease. i don't know if it's as good as the red panther. check with farmers if they got some they may sell you a tube. it comes in case lots and is very high.