[C320-list] Coolant system flush techniques?

[John Meyers]

To drain the hoses to the water heater etc. disconnect the hoses off the
engine.  I put a baggie over the end, punch a hole in the baggie, blow into
the hose/baggie (unless you like the taste of rubber) and make sure the
other disconnected hose is pointed into a bucket.

John Meyers
Wind Chime #406
Muskegon, MI

On Thu, Jul 30, 2015 at 9:57 AM, Jeff Hare <Catalina at thehares.com> wrote:

> First:  Yanmar 3GM30F  (European)
>
> Seeing as our boat is out of service for a while, it's a good time to do a
> serious cooling system flush.  I see and feel some slime coating the
> surfaces where the antifreeze touches.  I've used the "drain a little/add a
> little" approach since we got the boat.
>
> There are two AF drain ports I know about.  One on each side of the engine
> block.  One only drains down a little bit of antifreeze whereas the other
> is located lower on the block and removes quite a bit more.  So that takes
> care of draining some of it by gravity.   I don't know if the hot water
> heater system is drained or partially drained by this but I suspect not.
>
> So what's the best way you know to flush the slime out of the system in
> preparation for new antifreeze?
>
> -Jeff Hare
> #809
>
> PS:  I'm starting to collect quite a bit of used antifreeze in my
> garage... Having a hard time finding a place to take it here in NH.
>
>
> -----Original Message-----
> From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On
> Behalf Of swampcreek42
> Sent: Thursday, July 30, 2015 7:08 AM
> To: C320-List at Catalina320.com
> Subject: Re: [C320-list] What antifreeze/coolant?
>
>
>
> After flush #7 the water was completely clear. I replaced the thermostat
> and hose running from the t-stat to the heat exchanger, then being it was
> 10:00PM I went home. After work I'll go down and replace the other 3 hoses.
> I'm still deciding on weather to fill the engine with it's new coolant
> today since it won't be the recomended full 24 hours cure time on the thin
> coating of Permatex Ultra Black that I used on the t-stat gasket until
> 10:00PM tonight. Bruce Hunter Nauti Time #719
>
>
> Sent from my Verizon Wireless 4G LTE smartphone
>
>