REFLECTOR: engine break in

[James Traynor]

3 Years ago I had my 0-320 done. We ran mineral for the fist 10 and then dumped it then mineral for 15 and dumped it then 15/50 for 25 and dumped it then 15/50 for 50 and dumped it    The engine now has 400 hours with oil changes every 50 hours of run time 
Compression on inspection is July 3 / 2013  78/80 78/80 78/80 78/80. The engine uses 1 3/4 liters of oil in 50 hours . 
 
I also used Slick/50 at 200 hours as this has worked great on other engines.  
 
The rebuild shop told us to run the engine at full power for the first 25 Hours and not to over heat the engine to allow the rings to seat.   I wish you luck and hope others have suggestions for you.
James
 
From: stedmanlou at roadrunner.com
To: reflector at tvbf.org
Date: Sat, 27 Jul 2013 23:32:21 -0400
Subject: REFLECTOR: engine break in





I just had all four cylinders on my o-360 milled out 10/1000 and new 
pistons and rings. The engine only had 400 hours on it since major. One guy 
tells me to run my normal oil. Another tells me to run mineral oil. Another 
tells me to run mineral oil for ten hours and then go back to regular oil. 
Little confusing. I would welcome thoughts from the group. 
Thanks

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