Results 1 to 10 of 16
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10-14-2012, 04:19 PM #1
- Join Date
- Aug 2012
- Location
- Barrie, Ontario
- Boat
- Sea Ray
- Details
- 2004 380 DA
- Engine(s)
- 8.1 MPI's
- Posts
- 86
winterizing 2004 8.1 mpi s procedure ??
would anyone have a cut and paste from a manual for winterizing my twin 2004's 8.1 MPI s, I don't have any manuals for the boat

the motors have the closed cooling system with the air pump.
Thanks in advance.
Gary
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10-14-2012, 04:57 PM #2
- Join Date
- Aug 2010
- Location
- New Jersey
- Boat
- in between
- Details
- Ex SRV 240 Weekender twin
- Engine(s)
- in between
- Posts
- 571
Re: winterizing 2004 8.1 mpi s procedure ??
the motors have the closed cooling system with the air pump.
that means you have heat exchangers,all you need to do there is drain the raw water side.injected engines should use the remote tank mix. its the only way to protect the injectors.
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10-14-2012, 05:20 PM #3
- Join Date
- Aug 2012
- Location
- Barrie, Ontario
- Boat
- Sea Ray
- Details
- 2004 380 DA
- Engine(s)
- 8.1 MPI's
- Posts
- 86
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10-14-2012, 08:44 PM #4
- Join Date
- Feb 2009
- Location
- Upstate NY (lake Erie)
- Boat
- Searay
- Details
- 2003, 360 sundancer, RL70C, Kohler 7.3E, Walker Bay Genesis RIB
- Engine(s)
- 8.1 Horizons, ZF 63 IV V-drives
- Posts
- 865
Re: winterizing 2004 8.1 mpi s procedure ??
Gary, starts on page 46. But I, and most people I know, run the pink through the raw water side of the cooling system and call it a day.
http://www.maxumownersclub.com/forum...cruiser/30.pdf
Mark & Karen
'03 360DA "Captain's Choice" : (FOR SALE)
Prev. Sea Rays '95 330DA, '92 290DA, '90 220
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10-14-2012, 08:56 PM #5
- Join Date
- Feb 2009
- Location
- Upstate NY (lake Erie)
- Boat
- Searay
- Details
- 2003, 360 sundancer, RL70C, Kohler 7.3E, Walker Bay Genesis RIB
- Engine(s)
- 8.1 Horizons, ZF 63 IV V-drives
- Posts
- 865
Re: winterizing 2004 8.1 mpi s procedure ??
The remote tank mix is the cocktail that some people run through the motors to fog them for the winter. They mix up gasoline and two cycle outboard oil in a 10 to 1 mix, add appropriate amount of stabilizer in a remote tank, like an outboard tank, and plumb it into the fuel line between the fuel/water seperator and the fuel tank. then they run this mix while they are running the pink through the motors. FWIW, I go with the 2 ounces in the filter routine outlined in the manual on page 48, I feel it's easier.
Have fun
Mark & Karen
'03 360DA "Captain's Choice" : (FOR SALE)
Prev. Sea Rays '95 330DA, '92 290DA, '90 220
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10-14-2012, 08:58 PM #6
- Join Date
- Aug 2010
- Location
- New Jersey
- Boat
- in between
- Details
- Ex SRV 240 Weekender twin
- Engine(s)
- in between
- Posts
- 571
Re: winterizing 2004 8.1 mpi s procedure ??
individual injectors or throttle body type cannot be protected by fogging a motor thru the manifold . should you have moisture in the fuel, they will rust solid internally.
last time i checked they were about $110.00 each
http://www.*******.com/merc/Bullet/01/01_15.pdf copy and paste ,replace the *`s with b,o,a,t,f,i,x using no comma`s
http://www.google.com/url?sa=t&rct=j...AeMsvxvW4lG4YQLast edited by Bt Doctur; 10-14-2012 at 09:04 PM.
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10-14-2012, 10:16 PM #7
- Join Date
- Jan 2007
- Location
- West coast Vancouver to Alaska
- Boat
- SeaRay 380 Aft cabin
- Details
- 380 Aft Cabin 1989 GPS and Charts by Nobeltec
- Engine(s)
- Twin 454 strait shaft
- Posts
- 1,183
Re: winterizing 2004 8.1 mpi s procedure ??
my3sons
Nice manual. Where did you get it. I have printed version for my motors but an electronic copy would be nice.
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10-14-2012, 11:15 PM #8
- Join Date
- Aug 2012
- Location
- Barrie, Ontario
- Boat
- Sea Ray
- Details
- 2004 380 DA
- Engine(s)
- 8.1 MPI's
- Posts
- 86
Re: winterizing 2004 8.1 mpi s procedure ??
Thanks for all the info
Cheers
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10-17-2012, 09:00 PM #9
- Join Date
- Aug 2009
- Location
- Cheasapeake Bay
- Boat
- Searay
- Details
- 2004 280 Sundancer
- Engine(s)
- 496 Mercruiser w/ Bravo III
- Posts
- 2
Re: winterizing 2004 8.1 mpi s procedure ??
I was wondering about preparing the fuel system for extended storage and disconnecting the harness connections from fuel pump and fuel boost pump. Does anyone have more detailed info like photos of these connections so it's clearer on what to do. The directions are kinda vague. Thanks!
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10-18-2012, 07:38 AM #10
- Join Date
- Sep 2008
- Location
- Long Island.
- Boat
- Sea Ray, Mercury
- Details
- 2007 36DB --Merc 270 Airdek dinghy
- Engine(s)
- 8.1 s 7kw Kohler 6 hp Merc
- Posts
- 2,037
Re: winterizing 2004 8.1 mpi s procedure ??
Did the cocktail mix on my 8.1s yesterday worked great I have the gen III cool fuel modules all I did was disconnect the flare fitting going to the module from the fuel tank and attached the mixture tank which was made up from a short piece of fuel line with the 3gal tank connection on one side and the flare fitting on the other attached to fuel module started the motor ran at 1100-1200 rpm's for 5 mins then shut down thats it.ran the antifreeze through at the end of the 5 mins . If you have the cool fuel modules, this is where you attach the (pony tank) top pic. the bottom pic is the connection used to attach the tank to your temp fuel line. Hope this helps
Attachment 27532
Attachment 27533Last edited by Havana Shamrock; 10-18-2012 at 07:45 AM.

2007 36 DB
Mirage
Previous Sea Rays:
2003 320 DA
Havana Shamrock
1998 250 DA
Frozen with Salt
http://clubsearay.com/forum/group.php?groupid=12 Great south bay boaters



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That looks like fun! Is that your home/condo where the boat is docked? Sweet setup. Jim
MattWalker's Aussie 240DA...