| [GMCnet] Dip stick calibration question [message #271502] |
Mon, 09 February 2015 11:53  |
glwgmc
Messages: 1014
Registered: June 2004
Karma:
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Senior Member |
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One final thought on this subject.
I struggle to think GM would have kept the same oil refill specification throughout the entire 10 year run of the 455 production if it truly is wrong. It seems they would have seen warrantee repair issues from oil foaming or low oil pressure if the 6q at drain and fill with a filter was really over filling the engine at the normal low rpm ranges those engines saw in cars, Toros, or our MHs. And, if warrantee experience loss rates showed such a problem it stands to reason GM would have changed that spec somewhere along the line. They did not.
I am wondering if our conventional wisdom of adding back just 5q with a filter change is not overly influenced by what has been posted on the internet over the years by people using these engines in HP cars, jet boats and industrial applications where they are more likely to see higher RPM ranges more frequently and for longer periods of time.
Jerry
Jerry Work
The Dovetail Joint
Fine furniture designed and hand crafted in the 1907 former Masonic Temple building in historic Kerby, OR
Visitors always welcome!
glwork@mac.com
http://jerrywork.com
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Jerry & Sharon Work
78 Royale
Kerby, OR
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