Ok I get home last night from work, and I pop my hood to check my fluids. I pop the top of my overflow and there is this pudding like substance in my overflow tank. It's green and about the consistency of whip cream/pudding. I let it cool off and go pop the radiator cap off and its bone dry. The odd thing is it wasn't running hot. I don't see any leaks under the truck. And I don't have any steam coming from my exhaust. I added water and cranked it up. it's running fine. No missing or hesitation. I let it run for a few min and turned it back off. next I reach down and open my petcock to drain a little water, and the water barley trickles out.

Anybody know WTH is going on?

It's a 94 F150 XLT with a 5.0.

 

Drain the oil from the pan.Sounds like the coolant mixed with the oil.Likely a blown gasket.Could be a head gasket but might also be an intake manifold gasket(where the coolant passage is)leaking into the valley.

 

Wouldn't I be getting something out of the tailpipe if it were the gaskets? I'll change the oil tonight and see what I have.

I was thinking about doing a flush and fill on the radiator. Should I?

 

Not necessarily.Oil and coolant mix doesn't always produce steam.If you don't see an external coolant leak then it has to be going somewhere.My guess is you'll find out when you pop the drain plug off the oil pan.Happened to me once(snapped head bolt)and I didn't realize it until the temp guage started to climb.The car was ruuing great.Checked the rad and it was empty.Popped off a valve cover and it was full of green slop.Check the dipstick as there might be some slop on it.

 

Well I just changed my oil and it looked fine. I don't see a trans cooler below the radiator. I've flushing the radiator now. I'll be back in a couple of days once I get the drive time in on the radiator flush.

 

Let the engine get to operating temp. and check for leaks while it's running.It (coolant) has to be going somewhere.Glad the oil is clean.At least it's not internal.

 

here's the green stuff.

 

That certainly is not an oil coolant mixture.It looks like sediment from oxidation or maybe someone put in an excessive amount of radiator stop leak and just left it in the rad.Good thing you did a rad flush.Now all that remains is to find the leak.

 

The weird thing is that I've flushed it twice since I've had it. I guess it realllllly needed it. It seems to still be running fine, so I'm going to keep an eye one it for a while and see what happens.

 

Looks like somethin the wife cooked me for breakfast the other day.

 

Thanks for the warning!!!!! I'll be sure to eat before I get there!!!

 

I think I married her long lost sister.


I should have my drive time in for the cleaner, when I get home today. The Prestone says 3-6 hrs of drive time. I really haven't found anything and I'm hoping it was a false alarm.