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Forum: Engines and Propulsion Systems 26-11-2014, 20:30
Replies: 27
Views: 19,604
Posted By jabaraco
Re: Flushing Yanmar 4JH2E Coolant

Thanks! I think that the "no anode" design is, in fact, by design. I read somewhere that Yanmar designed the Salt Water Cooling system to have no dissimilar metals, hence, no sacrificial anodes....
Forum: Engines and Propulsion Systems 30-09-2014, 02:58
Replies: 27
Views: 19,604
Posted By jabaraco
Re: Flushing Yanmar 4JH2E Coolant

Hmmm. First I heard of a blue coolant.

Anybody else can chime in, but I think that the 3JH and 4JH use wet liners...

Here is an interesting SAE article about Chrysler being the last of the Big...
Forum: Engines and Propulsion Systems 14-09-2014, 05:50
Replies: 27
Views: 19,604
Posted By jabaraco
Re: Flushing Yanmar 4JH2E Coolant

Sorry, here is the Yanmar Service Bulletin

https://scyr.org/stellablue/images/stories/pdfs/Yanmar_Coolant.pdf
Forum: Engines and Propulsion Systems 14-09-2014, 05:47
Replies: 27
Views: 19,604
Posted By jabaraco
Re: Flushing Yanmar 4JH2E Coolant

This is an old thread, but here goes:

The Yanmar recommended coolant, Texaco 2997 (now part #222997), is an NOAT, that is a Nitrited (not NitrAted) Organic Acid Technology. As far as I know,...
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