I've got a 2012 300hp Yamaha four stroke on my boat. I'd like to start a series of UOAs. There isn't a drain plug so oil changes must be done with a fluid extractor.
The Moeller extractor I've been using for 7 years works great. The issue is that its impossible to completly empty the extractor's reservoir of oil.
I'm guessing there is 2-3 oz of oil remaining in the reservoir after the oil is emptied into a container for recycle.
How badly will the remaining oil in the reservoir skew the results of a UOA?
The oil in the reservoir could be from a lawn mower,generator,etc.
The Moeller extractor I've been using for 7 years works great. The issue is that its impossible to completly empty the extractor's reservoir of oil.
I'm guessing there is 2-3 oz of oil remaining in the reservoir after the oil is emptied into a container for recycle.
How badly will the remaining oil in the reservoir skew the results of a UOA?
The oil in the reservoir could be from a lawn mower,generator,etc.