Originally Posted by SimonV
The main difference between the 4.107 and 4.108 is the 107 has wet sleeves and the 108 dry.
I found this out several years ago when a diesel mechanic
told me that I should be using a heavy duty anti freeze instead of the regular duty stuff that I'ld been using in the 4-108 for around 20 years. Well...I flushed the engine
out and did convert to the heavy duty stuff with more corrosion
inhibitors thinking that it was better. Later I learned that the purpose of the heavy duty anti freeze was to provide extra protection for the wet sleeve and since I had the dry sleeve it was really not necessary to change.