About one year ago on my "new" ehome 9000 projector I replaced two tubes and ethilene glycole in all LC chambers. Few weeks ago I had a bitter surprise, after lens removal I found yellowish glycole in the blue tube. 100% pure lab grade ethilene glycole was used (I didn't know at that time that it had to be mixed with 30% glycerine). Same problem on the green. Today I removed the red lens and found that liquid (the same) was much better than the other two tubes! Strange!
When I removed one screw on the red to empty liquid it squirted out, it was under pressure! This didn't happen on the other two tubes.

First question is: was the air inside the chamber that caused the liquid to became yellowish?

Another information is that the red tube is original with factory silicon sealant, I only replaced the C element with a red one and there I used the same black silicone I used to seal the other two new tubes.

So here we've the second question: may be it was the wrong silicone?

But note that around the red C element the same material is in contact with coolant.
What do you think?
Please let me know as tomorrow I want to put new liquid in (70% ethilene glycole + 30% glycerine).

Hello

Glycol has a property where it aggressively absorbs water, even water vapor through the rubber bellows, that is why that tube was pressurized.