04-20-2021, 09:35 PM
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#3012
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Senior Member
Join Date: Jul 2014
Drives: 2020 Hakone
Location: London, Ont
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Quote:
Originally Posted by Swift
I wont quote the few posts above, however in regards to Sigma/data statistics, if today's manufacturer can't hold plus/minus .001" they are doing something wrong. My guess is the oil control ring/rings are to weak. Subaru has this problem in many of their engines because they want to run the thin oil while having as little as friction as possible to maximize MPG! They went so far as to replace the rings with different ones after 2015 in Legacy models and others...still have our issues especially if downshifting during spirited driving.
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This isn't a Subaru engine so not even remotely relevant.
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