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Old 04-21-2010, 09:16 PM   #1
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Question 454 CID 7.4L Horizons

I want to change the coolant in the engines but I find that the Starboard engine has Dex-Cool and the Port has what appears to be plain anti freeze? I would like to standardize on 1 coolant for both engines. All recommendations and help is greatly appreciated.
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Old 04-21-2010, 10:24 PM   #2
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I'd go with the dex-cool in both engines....makes life so much easier...


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Old 04-22-2010, 11:52 AM   #3
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Default 454 CID 7.4L Horizons

Thanks SP. As usual you are right there with help and advice. Should I completely drain each engine before I add the Dex-Cool? Seems to me to be the correct action. How about changing the T stats while I am at it?
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Old 04-22-2010, 12:48 PM   #4
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thanks..that would be the preference..while your doing both out...now would be a good time to change the t-stats out...plus any other maint. you have planned...like water pump impellers...fuel filter..oils...etc..

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Old 04-22-2010, 02:26 PM   #5
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Thanks always for your input and experience. Being a retired "ARMY" guy I did not have much to do with boats. Now parachutes and the various jungles is more to my experiences. I do love boating.
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Old 04-22-2010, 03:44 PM   #6
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now's the time to get all the periodic maintenance done so that you can have a worry free summer...don't forget the drive oils need to be replaced also....might need to tune up the props....wash..wax...
never ending story....

and thanks for your service to America....
I'm ex-AF and navy brat ..designer of navy subs and surface ships....although I'm working for boeing in commercial airplanes..I do miss the subs...

SP
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Old 04-22-2010, 03:59 PM   #7
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Hi SP,

I have a long relationship with the NAVY. Been in several joint operations with several SEAL teams. I was a team leader of an "A" team 5th Special Forces Gp and also attended some SEAL training activities at Little Creek, Va. Stayed away from boats for 20 years now look what has happened to me.
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Old 04-22-2010, 05:52 PM   #8
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haha....F5...sounds like you had some fun....I was involved in the detail design of the SSN683 special ops boat for a few yrs...back in reagan's day...then eventually got to Newport news shpbldg and helped design the SSN21 Class of boats...
was raised back there in the Norfolk area along with being a navy brat...we traveled all up and down the eastern seaboard...so..been around ships and boats all my life in one form or another....

I knew we'd suck you army pukes into the boating community someday!!..hahaha

SP
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Old 04-22-2010, 06:44 PM   #9
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SP,

Do you remember the BUS-1? I trained on the LSSC'S...Now that was fun!
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Old 04-22-2010, 07:21 PM   #10
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you talkin about AN/BSY-1 ????...helped install that on a few boats....
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I live in my own little world....but it's okay-they know me here!!!

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Tap-Rack-Bang

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