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An update: The oil still shows no sign of AF. The lights are working again. All appears well. With this thread and PATRACY's thread and his solution anyone who follows has a lot more information than we had to work with.

OK, what I hope is a final report on this. First I did not wait till Wednesday to change the oil. I got out of court a winner today, took the afternoon off to bask in my temporary glory, and changed out the oil and filters. Second, the oil did not show any accumulation of AF but was milk...

Thought about that. But, then you have diesel in the oil passages just as you do AF. Same result, if there is enough of either. When I said trace I meant that there was discoloration of the oil. In the last change there was no accumulation of AF. I am letting it sit till Wednesday to allow...

I run the engine because you have to remove the AF residue. I have changed it twice. I will probably change the oil again Wednesday. Changing the oil and filters runs about $80. I can think of no other way than to disassemble the entire engine for cleaning. But, if you have another way...

I have a much higher level of confidence tonight. The engine is idling. No dripping from the radiator cap. No steam from the slobber tube. It has been idling about 15 minutes. The oil shows signs of AF, but that is to be expected I think. The next oil change will tell the story. I will...

After I communicated with you and a couple of others, we went over what we had done so far. The sequence went in this order. The oil showed a lot of AF. We had changed out the oil cooler gaskets in the Summer so it appeared to be a blown head gasket. On removing the heads the number five...

Either it cured the problem or a new engine is in the offing. But, at least I do not have to sit around wondering any longer. Or, pulling the head off.

The crack, if that is what it was, would have to be in the ports. After taking the head off three times, it was cheaper to just put on a new head. The problem is either the head or something in the block. I checked every post that came up on this problem. Uniformly, it was a gasket or a...

Cracked head it seems. All else seems OK. I will make a pressure plate this month to detect cracked heads. If you need it, tell me.

The engine has been idling for half an hour. I will turn it off at the hour mark. The oil looks good and the engine is running fine. It may be just a cracked head. I hope.

It was nearly as cheap to buy a new head as to test the old one. The crack would be in the ports. We checked carefully the deck side of the head. Carefully.

The truck is home. Ran it fairly hard on the way. The oil does not appear to have more AF in it. There must, of course, be some residue. The rear cylinder is not pumping AF. Maybe a cracked head was the cause. I will keep starting and observing daily. We will figure it out. The new...

I am bringing the deuce home. We THINK we may have solved the problem. We DO NOT KNOW. I will fire it off and let it run each day next week to check it out. Any developments will be posted.

I put a new head from TNJ Murray on it. It has run a couple of hours. No blown gasket and it does not appear to be making AF in the cylinders. We will work it another couple of hours tomorrow and know more.

I am going to have to whip you sonny!

The bolts have not stretched and the thread is sufficient to hold the head in place.

I had not seen that, but I probably will build a sealing plate later just to loan out.

Changed out last Summer.

A couple of hours. Maybe drove it 30 miles.

They are all new and were tightly installed during the reassembly both times.