Do mineral spots around the overflow always indicate Blown HG's?

[Dan"gerous"]

I louded my Looney tune last night before I went into town. Truck ran great and I did a few full throttle take offs to impress my buddy who never rode in my truck before. I was under the hood today when I saw a few white spots around my overflow bottle just like my 04 did when she blew her HG's. I also noticed that the previous owner had the recall done where Ford installed a sticker on the side of the bottle to show the coolant level much lower. I also noticed my coolant was just about to the top. I removed enough to get it down to the new indicator mark and put my street tune back on and took her for ride. No spots when I returned.

Might the problem have been too much coolant in the bottle or more likely blown HG's? My up pipe is welded shut by the way.

[jamstoyz]

yeah viv at dj's said to lower the coolant when you install a sct. mine did the same thing then i ran easy for a while. when i sold the truck the hg's went after about a month. glad it didnt do it on me lol.

[robert smith]

Thirty bucks for an oil analysis with a check for glycol will let you know for certain.

[Granny]

Sounds like you may have had a little too much coolant in the bottle.

[Dan"gerous"]

Originally Posted by Granny

Sounds like you may have had a little too much coolant in the bottle.

I'm hoping that's the case. I have a trip coming up this weekend towing my travel trailer. No time to get anything done. I can't believe the coolant was that full, just about to the top

[mschn99]

Originally Posted by robert smith

Thirty bucks for an oil analysis with a check for glycol will let you know for certain.

No it wont....in fact on a 6.0 only about 30% of headgasket failures will show any glycol in the oil Since they gaskets only fail after the headbolts are streatched and the only time there is a leak is when combustion gasses enter the cooling system.....

And no....to answer the origional posters question....anything from an overfull coolant bottle...to flash boiling in the EGR cooler (semi normal in a tuned truck) to a plugged oil cooler to bad headgaskets can cause puking...

[tech10002]

What's funny is some trucks never puke even if the degas bottle is to the full mark. Mine does not have the sticker on it and is full to the high mark, and mine has never puked. I run looney every day, too. I don't beat on the truck, but I do accelerate hard up onramps and have seen EGTs hit 1500s for a second or so passing on two lanes.

[Dan"gerous"]

I just spoke with the previous owner and he claims he had the egr completely removed. Up pipe welded or plugged and the coolant lines were either re-routed or plugged. If that is the case how could the coolant have gotten hot enough to speew out of the tank? I shouldn't use the word speew, it was more like a few dribbles. Keep in mind the tank was almost to the top with coolant

[robert smith]

mschn99, how would it be possible for coolant to be passing past the head gaskets and not show up in the oil?

[Dan"gerous"]

Originally Posted by robert smith

mschn99, how would it be possible for coolant to be passing past the head gaskets and not show up in the oil?

It isn't the coolant getting past the head gaskets it's pressure getting past the gaskets into the coolant passages.