what is the liquid is in it

I have an older Mallory coil model # 2880 was opened up some liquid spilled out I understand this is to keep point's cool, it run's then just dies wait then try it again it will start can I refill it if so with what, one member suggested turning the coil seemed to work but the problem is back in researching this coil is for racing I don't plan to race just enjoy if I want to replace it do any have a suggestion it has a 7 msd system i'm not really up on high performance this car was a barn find and was built for speed I just want to drive but have something if I need to show off thank's for your help