Bill I have only used them on race application gave me about 10-15% better leak down than regular rings. Did use in a motor for street aplication 15+- years ago it burned
oil called Total Seal they said that
oil rings were low tension & with the HV
oil pump and side clearence on the rods it would't keep up.
But did see a paper not to long ago for street clearence would call T.S. and get there take on the subject.
Ken