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Old 10-28-2018, 12:24 PM
ebg338 ebg338 is offline
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Join Date: Oct 2018
Boat: Mastercraft, Prostar 205, 1994, LT1
Location: United States
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Winterization '94 Prostar 205 LT1 - being sure I've covered everything

Hello,

First of all, great forum. Been absolutely invaluable to me - bought my first MasterCraft in June. Had a pontoon for years but this is my first go around with an inboard so thought I'd check to see if I'm missing something in the winterization process. Followed the 2 pdf's posted on here. So what I've done / am doing (including maintenance items)

New oil / filter - Valvoline VR1 20w-50, filter Mobile 1 M1-302b
New trans fluid - Mobil 1 synthetic ATF (I have the velvet drive)
New plugs - Motorcraft AGSF22FM1 (is this a bad idea as this is not the stock plug but a match for it?)
New fuel filter at back of the engine Puralator 5860563 or Microguard 33481 (didn't find an additional one on top of the gas tank)
New thermostats from Skidim - upper and lower. Engine didn't want to get up to full temp - upper thermostat was stuck open so hope this will resolve it.
New impeller - old one looked okay so I'll hang on to it.
Replaced water separator - Sierra 18-7844

Filled tank with premium - ~3 oz Marine Stabl
Removed lower drains from block - one was the knock sensor (corroded so I'll replace), other side was a feed line for the shower.
Removed drain plugs from back of manifolds.
Removed shower lines at back of boat - they needed a good cleaning.
Boat has a heater so disconnected both feed lines from the motor, blew out the water, blew in marine antifreeze until it came out the other end.

I don't plan on running coolant through the engine based on what I've read. For the heater core I couldn't be certain I got the water out so decided to put some in there to be on the safe side.

And I'll clean the boat of course.

Wondering if I'm missing anything or any suggestions? Appreciate any feedback and thanks again for a great forum.

Almost forgot, here's a pic.
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  #2  
Old 10-28-2018, 12:39 PM
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mikeg205 mikeg205 is offline
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Join Date: Aug 2011
Boat: 1995 Pro Star 205 5.7 Liter
Location: Plainfield - Joliet, IL
Posts: 17,233
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There's a great checklist in the frequently asked questions thread... under general discussion

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Old 10-28-2018, 12:46 PM
swb911 swb911 is offline
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Join Date: Sep 2010
Boat: 2017 XT23 6000GDI, 1998 Prostar S&S LT1
Location: northwest
Posts: 181
Sounds like you have it handled. Good plan on rev AF in the heater core. Those things are fragile.


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Old 10-28-2018, 01:25 PM
MBrandt-TT MBrandt-TT is offline
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Join Date: May 2013
Boat: '95 PS 190
Location: West Coast
Posts: 46
I believe there is also a drain plug on the transmission cooler. After that you can rake your leaves!
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Old 10-28-2018, 01:34 PM
ebg338 ebg338 is offline
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Join Date: Oct 2018
Boat: Mastercraft, Prostar 205, 1994, LT1
Location: United States
Posts: 5
Think I got it. Removed the small brass plug in the bottom of this (pic - believe it's the trans cooler).

Thanks
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Old 10-28-2018, 01:38 PM
MBrandt-TT MBrandt-TT is offline
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Join Date: May 2013
Boat: '95 PS 190
Location: West Coast
Posts: 46
Yep, you got it. Are there pitot tubes on the back of the boat for the speedos? There can be water in those.
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  #7  
Old 10-28-2018, 02:47 PM
Jorski Jorski is offline
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Join Date: Jul 2004
Boat: 1993 190 with LT1
Location: Toronto, Canada
Posts: 1,508
You cab find an LT1 parts list here

https://www.mastercraft.com/teamtalk...ad.php?t=72147
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Old 10-28-2018, 04:24 PM
waterlogged882 waterlogged882 is offline
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Boat: 93 190
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Quote:
Originally Posted by ebg338 View Post
Hello,

New trans fluid - Mobil 1 synthetic ATF (I have the velvet drive)..............

........or any suggestions? Appreciate any feedback and thanks again for a great forum.
I recommend sticking with Dex III for the VD transmission. Not big on synthetic for that particular transmission. Your call.

.
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Old 10-28-2018, 04:48 PM
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Jarome Jarome is offline
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Join Date: Nov 2008
Boat: MC XT23 2018 5500 GDI
Location: Alberta
Posts: 61
Not sure what your concern with running RV antifreeze through the engine is. Its an easy thing to do and helps displace any residual moisture that might be in the block?? Its also a good idea to remove the drain plugs and seal up the exhaust ports and remove the side tarp straps to reduce the risk of mice getting in. Sounds like you're bang on with everything else though. Nice boat BTW!
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Old 10-28-2018, 07:30 PM
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bret bret is offline
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Join Date: Aug 2004
Boat: Prostar 190, 1993, Anniversary Limited.
Location: Heber Springs, AR
Posts: 1,190
I guess it's over kill but I always suck up 4 gallons of 50/50 Phosphate and silica free antifreeze, have a 5ft hose that I hook up to the suction side of trans cooler, then drain the block, manifolds, and required hoses.
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