I just spent the last hour searching the archives for posts on this subject; surprised not to find anything specific on the topic of oil changes, including types and brands of engine oil.
I picked up SR22 #62 on July 20th and, following two days at DHL, flew it to Seattle to spend an extra week with WingsAloft. I had been out of the cockpit for twenty years and needed a solid refresher (I plan to post my experience with WA in the next couple weeks). While I was there, I hit the magic 25 hours; time to replace the mineral oil with the real stuff. By the way, as predicted, consumption of mineral oil quit around the 18 hour mark. I asked WA to do the change.
The engine oil of choice at WA happens to be Exxon EE100 SAE 50, which I believe is a semi-synthetic lubricant. Prior to my departure I loaded up on a few extra quarts for my X/C home to Ohio and have been feeding my engine Exxon EE100 ever since. Now close to 70 hours on the Hobbs, I’m ready for my next change. When I talked with G Force, my nearest Cirrus authorized maintenance center (Akron), they were surprised to hear I was using Exxon; they prefer AeroShell, which is 100% non-synthetic. On top of that they told me that since I’m now on Exxon, that’s the road I’m going to have to travel from now on. A conversation with Mike Busch today basically confirmed that.
This being my first ownership, I’m learning stuff everyday. I just learned that, unlike an automobile, oil is not oil. You don’t mix them; you don’t even swap them at an oil change. I expect to hear all sorts of thoughts and opinions on this!
P.S. The airplane is flying great and fast!