PPRuNe Forums - View Single Post - R44- Lycoming Service Bulletin No. 388C
View Single Post
Old 14th Mar 2021, 23:17
  #6 (permalink)  
kansarasc
Guest
 
Posts: n/a
[QUOTE=B2N2;11008576]At 105 hrs that engine isn’t even broken in yet.
Unless you only do short hops that oil consumption looks to be kinda high for a new engine.

1 Qt / 8 h is high ?
this is the formula from Lycoming break in service instruction : 0.006 x BHP x 4 ÷ 7.4 = Qt./Hr.
https://www.lycoming.com/sites/defau...onsumption.pdf
Now that the max allowable oil consumption and and at that rate one will spend more time adding oil than flying. But most people I know are content with oil cons. of 1 Qt / 5-6 hours. And thats my average oil use for 40-45 hours between oil changes . I do not need to add oil for first 12-15 hours