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Old 09-03-2013, 07:42 PM   #24
Southern Comfort
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Drives: 2012 SIM 2SS/RS & z71
Join Date: Sep 2011
Location: North Georgia
Posts: 2,379
Quote:
Originally Posted by joelster View Post
Changing the oil can have an effect on power output. You should have left it in there. Older oil will be slightly thinner and rob slightly less power versus fresh oil.
Yes Sir - I agree, and posted it in the spirit of full disclosure.
But I wouldn't expect factory oil with 1300 miles would be significantly different from fresh oil with 50 miles. Assuming it were thinner, I would expect the new oil run to be lower power across the board, maybe worse at higher RPM.

Quote:
Originally Posted by jksynergy View Post
Thanks OP for posting. Interesting findings and makes my decision to order NPP for our 1LE a little more challenging.
Unless you change the manifolds and cats I wouldn't expect much of power difference within the normal operating ranges. I wanted the NPP style and was pleasantly surprised with the NPP sound.
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