winterizing twin 471's (detriot)

[reefrunner7]

Taking the luna sea to Kent island for the winter anyone have any tips for winterizing her detriots, I will have power and a heater down in engine room but if power goes out? Just be the raw water side I would imagine

 

[Ned L]

Re: winterizing twin 471's (detriot)

Yep, change the oil & filters, and run antifreeze through the raw water side till it comes out the exhaust and that should do it.

 

[reefrunner7]

Re: winterizing twin 471's (detriot)

The pink type antifreeze I would imagine right? wondering how to ingest the antifreeze through the system? Close seacocks and unhook the intake hose? put it into a bucket of antifreeze and turn the motor over? just guessing

 

[Grub54891]

Re: winterizing twin 471's (detriot)

Drain all water from the freshwater side of the engine first. Hook up your -100 antifreeze jug to the seawater pickup hose and run it till you get a good blue out the exhaust. Done! I always test what came out the exhaust with a refractometer just to be shure.
Grub