My car spit up some fluid, it's been hotter than all get out here 110 degrees with 90+ humidity. Looked under the car for a fluid trail and found nothing. I believe it's just over flow from the radiator. What do you guys think? Has anyone experienced this?

 

what color? what consistency? etc, some fluid isnt very descriptive.

I havent had any strange fluids coming from my mustang, maybe the condensation from your ac is building up somwhere and spilled over, 90% humidity is insane


you may be right though, coolant overflow in that kind of weather wouldnt be surprising

 

Yellowish like the coolant, the problem is the overflow feeds back into the cooling system. If I could find where it came from I would feel alot better.

Consistency, water like non-oily, but this what makes me think it's coolant. I wipe my fingers off, and I have a stickyness. Hence, coolant, but where in the hell did it leak from.

 

IM going to be 100% honest and say in not sure about the following, IM used to working on older cars so someone correct me if im wrong.

When the coolant heats up it builds pressure, a standard radiator cap is designed to hold in around 15psi of pressure, if the coolant gets to hot it can exceed that 15psi and the cap is designed to open up to release that pressure rather then blowing a hose or something.

though the rad cap isnt directly and the radiator I assume it works the same way

 

Could be a heater or coolant hose not seated correctly?

 

I say we get this mystery fluid to trace stat! That's what Horatio would do...

 

Sounds like its coming from the cap venting some pressure from the system. Check your cap and the top of your overflow tank and see if its dry or not. I dont understand why they made this system like this. On the other systems, the cap was on the radiator and it kept the system under pressure, when the pressure gets too high it would burp the coolant into the overflow. On this system, the cap is on the overflow but if it tries to vent the system there's a chance you might spill and loose coolant. I'm sure the EPA is gonna love this.

 

Sure it's not A/C condensor water?

 

Yeah, I'm sure about the condensor. Normal drip puddle from the A/C.

 

The coolant cap makes the most sense. We know how hot these engine compartment get. Thanks guys, I'm driving to the California 500 (to not in), I will check it when I park. Supposed to be just as hot today.

 

Probably just a burp from the coolant somehow. As long as the puddle isn't too big, probably not a big deal if it doesn't do it all the time. Check your overflow tank and make sure the levels are good.

 

110* with 90% humidity is about a 250* heat index, which is well over 100* past the highest ever recorded. ;-)

 

Humidity plays almost no role in engine cooling by the way. Ambient temperature is what matters. Humitidy affects humans because we sweat, and the water evaporates to cool us. When the humidity is high, the sweat doesn't evaporate as quickly...leading to less cooling.

A radiator does not use evaporative cooling, so humidity plays no role in cooling there. Just FYI.

 

My '05 did that on a hot day shortly after it was new. Turned out there was just a little too much in the overflow tank. Dropped the lavel down to where it was supposed to be and it hasn't done it since.

 

Let's put it this way, when it's a 110 and you get rain drops, the humidity is above 90%.

Oh PS, you weren't here!

One more thing it 104 here now and it's raining

 

It was a burp, found the tracks after the fuild fully dried.

Thanks