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Old 09-02-2010, 11:23 AM
wtrskr wtrskr is offline
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Join Date: Sep 2009
Boat: '94 prostar 190
Location: Midwest
Posts: 265
winterization supplies

I won't be winterizing for a while but I wanted to get ahead of the game and gather supplies. I don't have much experience with engines but I'm determined to learn how to winterize and do reasonably easy maintenence on my own. I have the following 3 questions.

Boat: 1994 Prostar 190
Engine: Chevy 350 tbi 275 hp (I beleive)
Transmission: Powerslot.

1.) While at the Farm and Fleet hardware store (awesome store btw), I couldn't find and solvent for cleaning the flame arrestor. What should I be looking for? Does it come in a spray can?

2.) What oil should I be using? I don't need the best, just something adequate.

I had a worker look up the oil type for a 1994 chevy 350 truck and he said 5w30. Searching this forum I saw a recomendation for 5w40 diesel. Is that right that Diesel engine oil is ok? I did see a big jug 5w40 diesel that was resonably priced.

3.) Any suggestions on Transmission fluid? The owners manual says Dextron II. However, the manual was written in 1994 so I'm wondering if that is still my best option? Is Dextron III ok?

Thanks for the help.
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Old 09-02-2010, 12:03 PM
east tx skier's Avatar
east tx skier east tx skier is offline
MC Hero
Join Date: Jul 2004
Boat: 1998 Ski Nautique
Location: End of my rope.
Posts: 25,792
1. Carburetor Cleaner Spray for the Flame Arrestor.

Something like this ...


2. Oil. I would suggest Valvoline VR-1 20w50, which still has the levels of ZDDP needed for what I believe was still a flat tappet cam in the 94 TBI. If you have an LT-1 with a roller cam, some Rotella 15W40 should be fine.

3. Dexron III is fine.
Previous: 1993 Prostar 205

Red 1998 Closed Bow Ski Boat, Ford 351, 310 hp, Acme 4 blade, Perfect Pass SG.


Tyler Ski Club

To me, this forum is about love of inboard boats. It is about the sharing of information and, on a good day, some humor. It is not about post count, brand of boat, or any other superfluous labels that lend themselves to a false sense of superiority. Please, respect one another, try to pass on accurate information, and keep your eye on the ball.

Last edited by east tx skier; 09-02-2010 at 12:06 PM.
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Old 09-03-2010, 09:12 AM
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JohnnyB JohnnyB is offline
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Join Date: Oct 2004
Boat: 2004 Prostar 190
Location: Titletown
Posts: 3,128
Winterizing around here is usually an early November activity
Everyone Dies, but not everyone lives

2004 Prostar 197, ACME 843
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Old 09-03-2010, 09:17 AM
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thatsmrmastercraft thatsmrmastercraft is online now
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Join Date: Sep 2008
Boat: 1977 Stars & Stripes
Location: St. Paul, MN
Posts: 16,638
I winterize in late October.
Package Deal:
Two Chrome 10 hole wheels with Kenda Loadstar radials.
Mounted, balanced and delivered.
With ST205/75R14..........$309
With ST215/75R14..........$346

PM or email me for tire, wheel or package pricing.

Parts, labor and return shipping included

Holley Marine 4160 Freshly Rebuilt $349 - Delivered


Coming soon.......TrailerEssentials.com
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Old 09-03-2010, 09:28 AM
Double D's Avatar
Double D Double D is online now
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Join Date: Sep 2004
Boat: 1994 Mastercraft, ProStar 205, 350 Indmar with 275 hp
Location: Massillon, Ohio
Posts: 5,209
Your all bumming me out talking about winterizing. Leave it alone for now..... PLEASE!!!!
If its not a competition ski boat, its always second best.

1994 MasterCraft ProStar 205
275 HP 350 Chevy Indmar
Monster Tower & PerfectPass

Check out the MasterCraft Buckeye Bash on Facebook!

"In my many years I have come to a conclusion that one useless man is a shame, two is a law firm and three or more is a congress." - John Adams
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Old 09-03-2010, 09:56 AM
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03geetee 03geetee is offline
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Join Date: Aug 2010
Boat: 1983 Skier 190 Stars and Stripes
Location: Midwest
Posts: 1,277
Originally Posted by Double D View Post
Your all bumming me out talking about winterizing. Leave it alone for now..... PLEASE!!!!

1983 MasterCraft Stars and Stripes
Cream/Red Metal Flake
"The misery that is now upon us is but the passing of GREED-the bitterness of men who fear the way of human progress. The hate of all men will pass, and dictators die and the power they took from the people will return to the people and so long as men die Liberty will never perish."
-Charles Chaplin-
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Old 09-03-2010, 10:33 AM
wtrskr wtrskr is offline
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Join Date: Sep 2009
Boat: '94 prostar 190
Location: Midwest
Posts: 265
Thanks for the info! I have no idea what a flat tappet cam is though I doubt I'll ever need to know.

I'll probably winterize mid to late October. Just reading up and gathering supplies ahead of time since it will be my first time doing it.
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Old 09-03-2010, 10:48 AM
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jconover jconover is offline
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Join Date: Sep 2009
Boat: 1988 ProStar 190/454HO
Location: Titletown USA, WI
Posts: 344
LOL I just cant help visualizing some form of the Monty Python skit...


Knights 1 and 2: Oooh! He said it!!

MC Owner: What? Winterize?

Knight 1: Ohh! He said it again!!!
Knight 2: What? Winterize?
Knight 1: Oh, now you've gone and said it soon.

Knight 2: Bloody right, it'll be snowing on your sorry a$$ before you know it.
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Old 09-08-2010, 05:43 PM
wtrskr wtrskr is offline
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Join Date: Sep 2009
Boat: '94 prostar 190
Location: Midwest
Posts: 265
I have another question related to spark plugs. It is a different topic but I don't want to keep opening threads. I was told that my engine was missing by someone who heard me drive away from their dock. I changed the plugs to hopefully fix the problem.

I simply pulled out an old plug and went to the hardware store to get the same ones. The existing plugs were AC CR43TS. I've now noticed that the owners manual calls for AC MR43T.

My questions:

1.) Are the AC CR43TS's ok?
2.)Any opinions as to why these would have been used by the previous owner (or original to the boat)?
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Old 09-10-2010, 01:29 PM
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captain planet captain planet is offline
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Join Date: Aug 2005
Boat: 1998 Prostar 190 Anniversary, LT1
Location: Canton, Ohio
Posts: 6,108
Originally Posted by Double D View Post
Your all bumming me out talking about winterizing. Leave it alone for now..... PLEASE!!!!
I'm already winterized........
1998 ProStar 190 30th Anniversary, Corvette LT-1, STARS AND STRIPES BABY (with a really bad bimini)!!!!!!** * Footin' anyone?

"It is no coincidence that the century of total war coincided with the century of central banking" - Ron Paul
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