I've had the above for nearly a year now so decided to change the oil. A heads up to anyone planning on this as I know a few members recently brought these, it's a bloody messy job! The drain plug is under the pump so I expected some mess, I made some channel for the oil to drain down, the oil from new is very thick even after running for 10 mins, its more like gear oil. its to slow to run down the channel and just overflows and goes everywhere. The pump holds a fair about of oil, probably just Over a litre so seems never ending when it's pouring slowing over the floor. I've used the compressor alot but to my surprise the oil was near spot less. Next time I decide to change the oil I'll prop the compressor up sidewalls so it drains right out. Also a very slow filler, pour in to fast and it likes to burp large quantities of oil out! A simple job turned out to be a right mess!