Just did it
Hello,Yesterday I changed the oil on my Universal M-18.I used this:http://www.westmarine.com/webapp/wcs/stores/servlet/ProductDisplay?storeId=10001&langId=-1&catalogId=10001&productId=27074The Topside MVP Oil Changer.It was very easy to do. I ran the engine for 5 minutes to warm the oil, created a vacuum with the oil changer, inserted the hose into the dipstick, opened a pinch valve, and about 5 minutes later I heard gurgling, which meant all the oil was out of the engine. One last thing, the WestMaring I bought mine at had it priced at $39 on the shelf.Good luck,Barry