Hello forum, I have been trying to search around to see what this could possible be but have had no luck, I have an 05 grand caravan that is leaking some yellow fluid antifreeze looking from the around the rear muffler, cant tell exactly where from but I can definitely see fluid leaking from the furthest rear muffler but where it is getting on the muffler I can not tell. the strange thing is that I looked at the reservoir and there is an orangish color fluid in there, not bright yellow like I am seeing on the snow where my van is parked. Thanks for any help you can provide, I am just stumped as to what it could be. transmission coolant?, rear heater core for the rear heater???

thanks all.

 

Welcome to DF
Did you ck the cooling system to see if you have leak? And is it snowing where you live?

 

Eliminate the obvious. Believe it or not someone wrote in to this or some other forum recently complaining of a yellow fluid at the back of the van. It turned out to be...his neighbor's dog pee.

Only fluids back there are antifreeze for the rear heater core, brake fluid and A/C system oil for the rear evaporator. All on the passenger side.

 

If it's coming from behind the right rear tire it is leak detection dye from the a/c system. Very common to leak from the junction back there. So common that they recalled it. Recall F01

 

Master,
It is snowing where I am, that is how I noticed the the fluid. It is a bright florescent green/yellow. I got underneath it and looked around and saw where the AC lines run along the passenger side and up into the body of the van, and didn't see any signs of the leak there, I look all around and just couldn't see any signs except for on the bottom of the muffler, it looks like it is leaking from the front of the muffler where the exhaust pipe enters and dripping down and running along the bottom of the muffler and the dripping off onto the snow. as my drive way does have a slight hill.

 

moisture leaking from the muffler is normal, that's why there's a drain hole.

 

but would that liquid be yellow/green? I know exhaust build moisture and that moisture needs a place to go, but this looks like antifreeze, however the antifreeze in the car is orange.

 

yep, coolant = orange
water from exhaust = clear or black
refridgerant dye = green/yellow glow in the dark looking stuff.

I still think it's freon dye.

 

me too i thinking rear ac lines. you got a uv light. use that to check the fluid. if it glows ya know refrigerant. ill bet your ac dont work in summer. dye usually travels with the oil.

 

I would agree as well. With A/C lines.