cavitation

I am not an expert in thsi but did a bit of searching around on the web. What I learned was that it is a potential problem with wet liners but not with dry sleaves which I think is what MF35 has. My personal experience was with a John Deere 2030 on which I had to do an engine rebuild after the oil pump failed and it seized up. The dealer almost insisted that I should pull a liner to inspect it, saying that it would be pitted. I took his advice and was glad I did. Pitting was almost 1/8 inch deep in places. It has wet liners. Cavitation apparently happens along the thrust line of the piston when the liner "rings" like a bell as the cylinder fires. Unlined engine blocks and dry lined blocks allegedly have more rigidity and so the cavitation is not such a problem as it is on wet lined ones. I suppose the material the liners are made from might affect it too. It seems to be a well reported thing with large capacity diesels like truck and plant engines and there are a few web documents about it. John Deere have a (very expensive) ready to use coolant that they claim should be used. Personally I think it might be cheaper to replace the liners every 20 years. (4 @£40 each against £27 for a single fill of coolant!) What I saw on the 2030 convinces me it does happen. Whather additives or special coolants actually help to stop it, I don't know.

I wouldn't worry about it on 35. My FE35 has survived 50 years on water and antifreeze mix. From what I have seen of the inside of one or two cast iron engine blocks when replacing core plugs, they don't seem to be pitted like the JD liners were. Main consolation is if wet liner does hole right through, it can be replaced quite easily.

hope this helps
best wishes
TO