Definitely motor oil in the coolant, a bit floating on top of resorvoir about 1/8" thick. I drained the oil and no coolant in it. I checked oil and transmission dipsticks, no traces of coolant in either. The coolant level was also low in the resorvoir. I have filled and added bars leaks heavy duty. I drove for a day and there is no sign of oil in coolant and no sign of coolant in oil.