I changed the lower unit oil on my 2000 Johnson 25hp 3cylinder today because I'm tarping up my boat for the winter. The oil was like a yellow and really thick and creamy. It took like 15min to drain. It was minus 1 outside. Was the oil like that because of the cold temperature or was it because there's water getting in and it was half frozen. It had new oil in it in the may and I used the motor for fishing about once a week.