[601HP]

I occasionally had the same problem. Until recently I always kept the cans nearly full.

This spring I made up 3 new cans and powder coated them. I'm keeping them about 1/2 full of fluid. I'm guessing they'll be less likely to slosh fluid from around the cap's rubber gasket.

I've driven about 300 miles this year and so far haven't seen brake fluid escaping. Time will tell!

David