The only time I can see not changing the oil yourself... is if you have one of those god forsaken cars that requires you to pump the oil out of the motor because the oil pan is integral or it doesn't have a tapped drain plug hole. » 7/25/14 2:37pm Yesterday 2:37pm

No, those cylinders are sliding across ports that act as valves just like the apex seals on an angry Dorito... This engine will not be reliable, it works just like a swash plate compresser... Fine for compressing gas, not so good at high rpm and temp » 7/15/14 7:32am 7/15/14 7:32am

I always ride like everyone in Houston is trying to kill me... mostly because they are... (he writes while thinking about the BMW 7 that cut him off twice in 200 feet of traffic, once around the freaking shoulder...) » 7/10/14 5:16pm 7/10/14 5:16pm

solar cells degrade with time and solar radiation exposure... micro meteoroid impacts sand blast the surfaces slowly... it still has fuel as the article states... just no fuel pressure, the Nitrogen tanks are depleted or stuck closed. One can not rely on gravity to feed the engines with fuel so typically there is a N2… » 7/10/14 1:55pm 7/10/14 1:55pm