[mikemf]

Thanks ‘olukyme’. I already took air filter and some other parts away and I can clearly see the steal tube that you mentioned. It’s not leaking.
Today I went to a junk yard and looked for disassembled Ford engines. I didn’t find Windstar engine, but I found engines of ‘Taurus’ and other Fords. On all those engines on the side that connects to the transmission, there are at least two or three plugs. One bigger in the middle and two or one smaller (I think) frost plugs. All of them are covered by transmission body, so in order to check or change them I have to disconnect transmission from engine. Can somebody confirm that Windstar 96 engine has some plugs (frost or ??) that are covered by transmission body? Are those coolant plugs? I was told by A Ford man that there are six frost plugs. I found all of them in reachable places on engine. Does Windstar 96 have more than six frost plugs?