I have an 1987 Catalina 27 TR with a Universal M18 diesel auxillary. I am stumped as to where the anti-freeze drain(s) is located so I can change it. I found the plug on the lower aft end of the manifold and this yielded about a pint of AF. The manual refers to a petcock above the oil filter, I see nothing like that to access AF. The manual also referred to a drain on the hose going back to the heat exchanger, that hose is clean, no access for draining. I disconnected that hose at the fresh water pump, but it is too high to get anything out of the block. There used to be a hot water heater, and I am speculating that in tearing that out there may have been some modification to the engine connections.
Any help. Pictures would be great. Thanks, Stumped
