alafarm
Bronze Member
Interesting, I have 4, I have never had this problem with any of them..
Like wise, I don't understand not having trouble with them! I have used all kinds of manual grease guns at work loaded by myself and others and they all air lock to some degree. Like wise with the grease. I have used everything on the market I assume, from the cheapest to the 10 dollar a tube stuff and If I let it sit under pressure for a few weeks they all drip oil, especially in the summer.