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Old 06-03-2014, 12:26 PM
RFSchaller RFSchaller is offline
 
Join Date: Oct 2010
Location: Phoenix, AZ
Posts: 2,115
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Before you drain the tank pull the prop through until you hear the gurgle noise indicating the oil has been returned to the tank. Then you'll just have what's left in the oil lines and a small residual in the filter and engine. If you also drain the lines you'll have to do the system purge to refill them. Check your ROTAX SBs because I think 25 Hrs is the recommended oil change frequency with 100 LL.
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