<VV> Re: break-in

[djtcz@comcast.net]

> > Is it possible to buy such an OEM break-in oil filter? Or what filter 
> > media do I ask for when talking to oil filter manufactures? Media 
> > micron size? Etc. 
> > 
> > John Dozsa 
I don't think I'd worry about the filter too much.  If I did the engine cleaning, the cylinder walls would have stayed clean when wiped with a white oily rag, so the only debris is wear debris.
The break-in lube choice is a darned tough compromise. The cam people want some medium engine speeds right away with exotic lubes to protect against scuffing.  The rings could tolerate, and maybe even benefit from lesser lube protection.  Ring manufacturers want to load the rings pretty hard for short bursts, like half throttle drag strip runs.
good brief (a few second) spurts of medium to heavy throttle followed by many minutes of varying rpm easy cruising almost as soon as the engine is warmed up.  My thinking is I want to break in the cylinders (modern rings' barrel faces are lapped and already quite smooth) and buff down the accidental high spots without creating tiny local hots spots that thin out the oil right there and cause scuffing.
I do a careful static ignition timing, and maybe even check it with a light while cranking with the coil wire grounded to also build oil pressure for the first time.  I also like to use a known carburetor from a good running engine so the first few minutes aren;t spent washing the poor old cylinders with raw gasoline or struggling to get it running.  It should fire right up and respond nicely to the throttle, so I can fast idle it and gently play with the throttle while keeping an eye and nose on things.
I do intentionally avoid High speed hiway cruising for a bit because I think that pumps  vast amounts of heat in a short time.  Especially when tantalized by a frisky pony of a fresh engine.