Cruisers Forum

Join CruisersForum Today

Thread Tools Rate Thread Display Modes
Old 01-05-2013, 19:44   #1
Registered User

Join Date: May 2013
Posts: 2
Yanmar's that run hotter every year.

I wanted to share the fix to my five year battle. If your engine over heats at medium to high RPM try draining your year old antifreeze and flush with fresh water. Drain and flush again to get all the antifreeze out of the system, running your engine each time you flush, enough to get the engine thermostat open. Then use Zerex Radiator Super Cleaner flush, follow directions. Be sure and run your engine for at least four to six hours with the Zerex Flush. Zerex is green when you pour it in. After running your engine for four to six hours it should come out light brown or the color of coffee if your heat exchanger build up was like mine in a seven year old boat. Drain your engine and flush with fresh water. Drain it a second time and flush again. Now fill with NAPA heavy duty antifreeze mixed 50/50. Do not put antifreeze concentrate in the engine followed by water and expect the engine to mix it up. This method "Scales" the heat exchanger tubes. With your problem fixed, never use Dex Cool again. Disclaimer: I do not work for NAPA, I don't know anyone at NAPA, I do not own NAPA stock. I fought my 54 hp Yanmar over heating for five years. This fixed my problem completely. You can not know how great I now feel about my 41 Hunter.
Pgisailor is offline   Reply With Quote

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 15:51.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.