DavidS Posted May 22, 2017 Share Posted May 22, 2017 We have had our Oliver only since last September, and many of the RV systems are new to us. One issue is the Grey Tank. We take one short shower and wash a few dishes and the Grey Tank is half full. Since we were camping at a State Park with full hookups, I decided to do an experiment to test the calibration of the Grey Water Monitor. I did the experiment with the trailer completely level. I emptied the Grey Tanks, and the Monitor read 13. I then filled a 5 gallon bucket with water and poured it into the shower drain. Monitor reads 44! Only 5 gallons, and it reads 44! Pour another five gallons into the drain, record the monitor. Repeat. When I had poured 25 gallons into the system the monitor read 100. I could only pour about 3 more gallons into the drain before the tank was full and water backed up into the shower pan. Thus the total amount of water I could add was 28 gallons. Since the Oliver Grey Tank has a 35.5 gallon capacity, I assume that the tank was not fully drained, and it still had 7.5 gallons still in the tank at the start of the experiment. So I am not crazy. We add five gallons to the (nearly) empty Grey Tank, and the Monitor reads 44, but it is only 35% full. I did this experiment with the trailer level, because the trailer is level when I Monitor Grey Tank usage. I have noticed that when I empty the Grey Tanks with the nose elevated, the Monitor reads zero, but whenever I empty with the trailer level, the Monitor reads 13. Lesson: Empty tanks with nose elevated… Lesson two: I do not need to panic if the Monitor reads 80, it is only 2/3 full. My experiment is not perfect. I used a line on my bucket as the 5 gallon mark, and that may not be completely accurate. I could repeat the experiment with the tank fully emptied, but my wife already gave me grief about wasting 30 gallons of fresh water. My questions: Have others experienced this problem? Is there an easy fix, short of a 1650 mile drive to Hohenwald? Finally, we camped at Kodachrome Basin State Park, which was lovely. Highly recommended. They take reservations at the campground, and we reserved a site with hookups. 15 of the 34 sites have hookups. The site we had with hookups was really nice. But if we go again I would reserve one of the non-hookup sites on the edge of the campground. These sites are very pretty and really private. David 4 David Stillman, Salt Lake City, Utah 2016 Oliver Elite II Hull 164 | 2017 Audi Q7 tow vehicle. Travel and Photography Blog: http://davidstravels.net Link to comment Share on other sites More sharing options...
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