The coolant petcock is on the starboard side of the engine. It is hard to access and mine will not open. I decided not to try to force it, as if I broke it, it would be a bear to replace. I think that by pumping out the maniforld tank and disconnecting the lines from the heat exchanger, you can get 75% of the AF out. When I drain out any AF, I always replace it with new, no matter how good the old stuff looked. BTW, I always have to "burp" mine when done. Don, #6293, Niceville, FL
--- On Wed, 3/24/10, zyachtsman <[email protected]> wrote: From: zyachtsman <[email protected]> Subject: [IC27A] Anti-freeze drain To: [email protected] Date: Wednesday, March 24, 2010, 10:19 PM 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
