Originally Posted by 03Scott
What is in the fluid that comes out and how do we dispose of it? I've been looking in to the idea, I don't have any issues with my ecoboost but I don't want that crap going into the motor.
Most NA engines it will be mainly oil, some unburnt fuel, and soot and carbon particles as well as some sulfuric acid. But the ecoboost PCV system does not evacuate except at idle and low throttle, so a good deal of water and larger amounts of unburnt fuel and the other compounds will be caught in the first 1000 miles or so until the RX system has removed and evacuated what has been accumulating in the crankcase all along.
If you let it settle a week or so there are 4 distinct layers with water and sulfuric acid in the bottom section, next is fuel and water, then emulsified oil/water, and oil alone on the top.
All should be disposed of as any drain oil is, at any auto parts store or a collection site.
We just sent in the last drain from the shop EB F150 to BlackStone labs to see what they find in detail, and we will post this up.
Any engine though you do not want anything but air and fuel present in the combustion process.