dub,

Be careful in your purchase of a suction type oil changer. I have seen posts that the topsider brand will melt if used to suck the oil out while it is at operating temperature.

It is very important to change the oil while hot, as hot as possible. When the oil is hot, the contaminants are churned up in the oil and will come out with it. If the oil is cold, some of the contaminants are clinging to the inside of the engine, and if left behind result in sludge and acid build up.

I personally prefer draining it out the bottom, but for those who insist on taking out the top, get a system that can take it out while hot.

Best of luck,