[C320-list] Antifreeze

[sail-ability sail-ability]

   The thing about changing the antifreeze in the 3GM30F is the difficulty
   in getting the antifreeze out of the hot water heater. The easiest way
   I've found is to find the  engine hose which pumps the antifreeze
   through the hot water heat exchanger. You disconnect this hose and with
   the engine drain cocks open blow into that hose. It will force the
   antifreeze out of the heat exchanger into the engine and will drain out
   through the drain cocks. If the antifreeze has recently been changed
   (within 3 years) I would just drain the engine and replace that
   antifreeze. As has been suggested any of the good modern antifreezes
   are compatible with one another. As I recall there is about a liter of
   antifreeze in the hot water heat exchanger.

   Cheers

   JohnM

   1999#574

     ---------- Original Message ----------
     From: Warren Updike <wupdike at hotmail.com>
     Date: December 22, 2017 at 8:42 AM
     Changing antifreeze types (color) in the past could be a problem. If
     it has not been changed in years, may still be a problem. From what
     I've read, the newer types will tolerate any of the older types
     without congealing. But be sure to check authoritative sources
     before proceeding.
     Warren and Pattie Updike
     1994 C320 "Warr de Mar" #62
     Middle River, Chesapeake Bay
     -----Original Message-----
     From: Bruce Hunter [mailto:swampcreek42 at yahoo.com]
     Sent: Tuesday, December 19, 2017 12:08 PM
     To: C320-List at Catalina320.com; Tom Talling;
     c320-list at lists.catalina320.com
     Subject: Re: [C320-list] Antifreeze
     It depends on what you want to do. Most just go with what color they
     have and stick with it. I went from green (Yanmar, I think) to red
     Yanmar Long Life BUT flushed my engine out 7 or 8 times Flush #2
     being with Prestone cleaner to make sure ALL the green was out.
     Simply changing color without flushing all the old stuff out can
     really mess things up from what I've read. Why did I change? They
     say the red is better and last longer and since I'm nuts about my
     boat (she is a living being after all) I only give her the very
     best! :)
     Bruce HunterNauti Time #719
     Sent from Yahoo Mail on Android
     On Tue, Dec 19, 2017 at 11:48 AM, Tom Talling<ttalling at gmail.com>
     wrote: What type of antifreeze should I use for my Yanmar diesel.
     What is the right color?
     Regards,
     Tom Talling
     215-262-1427
     Ttalling at comcast.net
     Sent from my iPad

   >