Running-in new piston rings

by Kevin Stewart in 912 / 914 Technical Questions 8 years ago

What is the process to run-in new piston rings? Using the standard synthetic or semi-synthetic oil is unlikely to do the job. Has anyone had any experience of doing this?

I heard that the factory use a special oil and run the engine on a dyno to run it in.

Re: Running-in new piston rings

by Rob Seaton » 8 years ago

Rob Seaton

3 1.32k 251

The factory uses Aeroshell Sport +4 10w-40.
No special oil is needed and no break-in procedure is specified for ring replacement.
Just don't lug, or baby, the engine.
During assembly: DO NOT use moly or any other coating on the piston or cylinder walls. Only a film of motor oil is needed.

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