Problem With New Yanmar??

[LMTC]

Au contraire.

Article

"The big difference between gas and diesel engines is the fuel. Diesel requires a much higher compression to detonate(explode). This higher detonation means much higher pressures on the engine. That's what makes a diesel so loud. In all engines (gas or diesel),The piston hammers against the side of the cylinder wall while transferring up and down motion to the rotating crankshaft. In a diesel it has a much harder impact. Imagine hitting a bucket of water with a hammer. What this does is cause the cylinder wall to first move towards the coolant, and then away from it, at a very high frequency. This rapid movement causes very small vapor bubbles to form. These tiny bubbles (not the ones in your wine!) then implode or collapse as the wall comes back again. This creates very high pressures in very tiny areas. This is what causes small horizontal holes to form. These holes will eventually drill right thru into the combustion chamber. This will allow coolant into the oil when the engine is off, and oil into the coolant when running. This can happen in as little as 500 hours of operation when using just water as a coolant.
Several things can also contribute to this erosion. Such as a cooling system that can't hold pressure, air in the coolant, miss-routed hoses, or overheating.

[SIZE=+1]But have no fear, SCAs are here."[/SIZE]

Diesel Coolant​

 

[pruntyc]

I personally think diesel antifreeze is a gimmick. They have been using regular antifreeze for years in them. And I know of no one that is using anything else. They get by with the regular for decades and now need something different? I have a new John Deere and it don't call for anything special. Oh of course they want you to buy their brand, but if not just put in glycol base antifreeze the manual says. So I guess someone needs to tell John Deere, they are telling people to put the wrong thing in their Yanmar engines that they sold them. Sorry but that is what I think, it seems like someone is always coming up with something, to make money, that really isn't needed.

 

[roxynoodle]

I was told to make sure it was rated for diesels so that is what I bought. I was advised by a mechanic for Bobcat so I figured he knew what he was talking about and he certainly didn't profit in any way from my purchase.

 

[Eddie]

Dick evidently don't own a Ford Power Stroke Diesel!!!

 

[pruntyc]

These Yanmar engines are a long ways from a Ford power stroke diesel. That is what we are suppose to be talking about on this forum.

 

[Eddie]

These Yanmar engines are a long ways from a Ford power stroke diesel. That is what we are suppose to be talking about on this forum.

You just said antifreeze is antifreeze, I proved you wrong and you want to change the subject.

 

[pruntyc]

You say you proved me wrong. I really don't know that at all. Just because you said something, it doesn't prove it to me. And I still believe antifreeze is antifreeze, and will till I see something to show me other wise. You are right in that I never had a Ford power stroke, but that don't prove to me, that any antifreeze won't work in it. At my age, I don't have any plans on getting a Ford P S either. I have no need for one.

 

[HGM]

I actually agree with Dick on this one, technically.. The PowerStroke does not require "special" antifreeze(again, technically).. It does (prior to '03) require a diesel coolant conditioner..From '03(some '02s) they use Gold Coolant wich does not require the additive... Actually, I guess everyone is right here ... The story Wayne tells describes diesel cavitation, a very big problem with diesel engines of all sizes though more so with wet sleeves(as I am told)..

So, long story short..... Add your favorite brand coolant and add the additive, or get a diesel coolant..

 

[Travis_R]

O.K.....HERE I GO AGAIN.............

Just got off the tractor a little while ago.........Used the 4' cutter for about 10 minutes...........Light never came on.................Brought cutter back to owner..................Came back and decided to try the 5' Squealer cutter again...................Well, guess what??......................THE LIGHT NEVER CAME ON................I've pretty much come to a conclusion that its gotta be a bad sensor..........I used the tractor in some thick stuff too.................Still waiting on Stuart to send me a new light bulb and a new temp. sending unit sensor.................

Travis

 

[pruntyc]

And I keep asking, why a new bulb?????? The old one came on, so it must be alright. What can go wrong with a bulb, they either work or they don't, just that simple.