My Oil gauge actually bobbles. Meaning when i am on the gas it runs at about 55, but at idle it bumps up and down around 35+/-. Any ideas. (Also have a leak coming from this area I think, seems to run down the transmission dip stick and down to an odd spot on the bell housing. Fluid seems clear though and slightly oily, not so much like motor oil. (I am learning there is a filter in that spot underneath pressure sensor?? Would a filter clean the oil up that much?) this is my first post and cant seem to find a rear engine leak from the top of the motor.... I am pulling the plastic shrouds off after work today to see if I can get a better view. Starting to leave a small spot after each use, sometimes the diameter of 3+ inches... Doesn't seem to be getting worse but has been going on for a couple weeks. It's a 6.0 - O4' yukon denali. Any ideas? Fluid is not pink, more like clear and low density, but no odor...
edit: all the fluids seem to be checking out ok when measured.... this is so weird.