I am new here and hope someone can help me with a general question. I just picked up a 1948 International KB-5. It was last registered in 1981 and has been sitting indoors since. The motor is free and was cranked to check by the previous owner. When I picked up the truck, I checked the dipstick and noticed a clear fluid at the top of the stick and oil below. I was afraid it was water and that I had a block crack but the clear fluid was thick and oily feeling. Does anyone know what this is? Could additives in the oil have separated over time resulting in this scenario?