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Old 05-12-2006 | 11:33 AM
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Geistware
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From: Locust Grove, GA
Default RE: does changing oil mix change tune on DA-50?
I have used MC-1 from 50:1 to 70:1.
At 50:1 I get a green film on the bottom of my plane. It is from the unburned oil. It is not wet but tacky and very thick.
At 70:1 there is not film and nothing on the fuselage. The oil is supposed to be good to 80:1 but haven't done that yet.
I may go down to 60:1 and see the difference. When I changed from 50:1 to 70:1 I had to lean my idle mixture. The engine was running almost too fast to land.
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