After run Oil

[Terry Brox]

Hi Bill,
        You will get a wide range of opinions on this. The main difference will be whether or not to use any, and if not, whether or not to run the engine dry. 
         I never use after run, however, performance specialties sell an after run that will not harm the internals of the engine. DO NOT USE A PETROLEUM BASED PRODUCT OF ANY KIND.
         I run Cool Power heli fuel and run the engine dry after flying. I never have replaced bearings because of need. I have replaced the bearings just to "make me feel better" but they seemed fine. When I rebuild a YS, the inside is full of oil, even though I run it dry after flying. When running it dry, only the part of the fuel that burn will run out, leaving a good bit of oil still in the engine.

          Hope this helps get the thread started, good luck, Terry
  ----- Original Message ----- 
  From: Bill Thompson 
  To: discussion at nsrca.org 
  Sent: Monday, November 17, 2003 4:06 PM
  Subject: After run Oil


  What is the best after run oil should I use in my YS engines ?

  Bill Thompson
  AMA 7703
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