I did use the search function and discovered many issues similer but not exactly like mine. As stated i filled up my tank and while driving noticed the fuel indicator move from full to empty gradually over 2-7 minutes. When i parked the car, left it for about 20 minutes and restarted i had a full tank again with the same process bringing me to empty. Any feedback would be greatly appreciated. Posted this in the Tech forum as well

Thanks in advance gentleman

2001 ML55