We have a winner! See DR for your totally cool and very expensive prize!
Now isn't it a wonder why these engines need to get oil temps up to 200F each flight? This helps "burn off" the water out of the oil. In talking with the lubrication engineer from Phillips Aviation Oil I got a lot of questions answered and myths busted.
1. After each flight remove the dip stick for 10-15 mins to allow water vapor to escape from the crankcase oil. You can actually see water vapor coming out.
2. Oil temps of 200 - 220F are totally normal and in fact good for the oil & engine. Temps to 240F on climb out are nothing to worry about at all. No need to "step" the climb out to allow the oil to cool.
3. Engine oil will suspend water so getting the temps up is a really good idea considering the amount of water the engine produces.
4. Oil changes at the end of the season is really important for any engine in that the "corrosive additive package" only last 3-4 months in an engine being used so letting an engine sit all winter with the old oil is a bad idea.
5. Semi-synthetic aviation oil is semi good at suspending lead. If you burn alot of 100LL you should not use semi- synthetics. (JMHO)
6. Anything you can do to preheat an engine before start up (during cold weather) is a good thing. Idling below 1,000 for the 1st 2-3 mins is not a good thing either. Get that oil to the bearings ASAP.
7. I know oil has been beat to death, but it was nice to hear from an expert and I thought I would pass along the info.
Lets not start a flaming war over oil, I just thought I would pass on what I heard.