I bought a new master cylinder from Ranger a while back. The only difference in this one and the old one is the way the cap fits in the hole on the tongue. Didn't fit quite right but made it work. Now it is leaking around the cap. It seems to be seating down on the master cylinder ok. Seems like it leaks worse when it is just sitting in the garage and even more when the weather is cold.
Any ideas why or how to stop it? Strange for sure.
Greg