Are we still debating that you have to get the plane in the air VS running it on the ground for 30 minutes is good enough to get the moisture out?

[skyking3286]

GANs column a couple of months back had the interesting idea of putting in a quart of preservative oil and your regular choice of oil in the plane when you can't fly frequently. He is a lubrication expert, retired, from Lycoming. When you are flying more often, change it out to the regular. He o pinioned if you do that, the hours with the preservative oil wouldn't even count toward the max. hours you can run the preservative oil. That make more sense to me than ground running.

 

[bluerooster]

My engine might barely bump 180 after flying at 75% power for about 4 hours. It usually runs about 165-170. So I guess it will corrode away due to not getting warm enough to expell the accumulated water.

 

[NorthEast Ohio]

True, it might corrode away.
… or your temp gauge is reading 10 to 15 degrees low.

 

[flyingron]

True, it might corrode away.
… or your temp gauge is reading 10 to 15 degrees low.

Or it's not where the oil is the hottest.

 

[Grum.Man]

So many people know the correct answer yet I still see ads posted regularly stating "Hasn't flown in a while but run and taxied regularly". Such a shame.

 

[Dan Thomas]

Or it's not where the oil is the hottest.

Yup. The oil temp is taken after it has passed through the cooler.