Preview: Marine Diesel Engines, Part 4 – Coolant System Overview

6 Responses So Far to “Marine Diesel Engines, Part 4 – Coolant System Overview”

• 

  beth mcmurray says:

  Hi, could you tell me where on the engine will I find the specs. I know that it’s a 3 cylinder Yanmar but nothing else. Thanks

• 

  Samuel Jobin says:

  Amazing information. Now, you say that it’s a mix of antifreeze and water? Why don’t you just put 100% antifreeze?

  • 

    Jon Bardo says:

    Engine coolant (anti-freeze) should be mixed 50/50 with distilled water or it can be purchased pre-mixed. This mixture will have a freeze point of -34 F. A mixture of less than 50/50 may not provide the optimum corrosion inhibitor required by engine manufacturers, conversley a mixture greater than 50/50 may contain to strong an inhibitor dose. I have certainly seen coolant at or near full strength, and do not fully know the adverse effects. Best advice is follow the manufacturers recommendation. JCB

• 

  Curt Cleveland says:

  Just great videos. I’m learning a lot . I have a yanmar 2gm20f and these videos are very educational to a novice like me, thanks, Curt

• 

  James M B Keyser says:

  where are 1,2, and three? how to access 1 and go on from the beginning?

  • 

    Steve Stone says:

    Hey James. You can always click on the “Marine Engines” link just below the video to go directly to the category page where all the videos in this series are. You weren’t missing it before, we just fixed that on this video. This is the same for all videos. Clicking on the blue “category link” under the video will take you directly to that category that lists all the videos on that category.