I recently became custodian of a '31 roadster model 50, which I'm still trying to understand. The car has just developed an antifreeze leak from the oil temperature regulator (by the way, the previous owner had bypassed the oil supply). Two things occurred which may have created this leak: first, in anticipation of colder than normal temperatures here in NJ, I added more antifreeze; and secondly, we had those below zero temps. Prior to this, there wasn't a leak. But before I jump to the conclusion that it is leaking and start ripping it apart, I was wondering if the regulator might be working as designed and releasing coolant if the system has been over filled. However, if it is leaking, does anyone have any tips, warnings, or suggestions before I remove the unit. Also, any thoughts on best way to repair. Hopefully, I've explained my issue and thanks for your help.