If you run your boat to warm up the oil AND pull the oil dipstick up about 1 inch to allow air into the engine, it will take about 60 seconds to drain all the oil out of the engine. I have changed my oil on all my boats this way for the last 10 years. If you do it with a cold engine it will take much longer. Also, if you don't pull up the dipstick, it will take longer.
|