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**Goat Blower** · 04-03-2010

It means that the rings are holding up the proper compression in the cylinder and not allowing oil blowby in the crankcase, basically isolating the two to a degree. Mahle is a good piston, they've been around forever even supplying to exotic OEMs.

This topic has been beat to death here, but you want a decent 45 degree hone, use regular non-detergent oil for break-in, and follow the procedure of your choice. Ring and piston to wall gaps being correct should be a given.

04-03-2010	#2
Goat Blower aka Goodbye Asteroids Champion! Beach Squirter Champion! Join Date: Oct 2003 Location: under the car Drives: Taylor Made R15 Posts: 7,765	Re: Reasons for rings not "Seating" It means that the rings are holding up the proper compression in the cylinder and not allowing oil blowby in the crankcase, basically isolating the two to a degree. Mahle is a good piston, they've been around forever even supplying to exotic OEMs. This topic has been beat to death here, but you want a decent 45 degree hone, use regular non-detergent oil for break-in, and follow the procedure of your choice. Ring and piston to wall gaps being correct should be a given.