I was very sceptical about the whole deal at first. Drain plug laying on the bench and the bike is running???? Yeah right....but Holy Crap!!! This deal works and works well. I will use this every time my oil is changed. I did a complete oil change, rode it around town (5 miles) and then pulled the dipstick and the oil looked as it did when it was poured out of the SYN3 quart container!!!! I did catch 3 ounces when I drained it. Going to send it in for analysis. Only thing, if dealer didn't get all the first 1000 mile oil out then it will have contaminated my 3 oz 5000 mile sample. We'll see what they come up with...