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Old 06-17-2019, 09:18 PM   #13
Scooby Newbie
Member#: 363007
Join Date: Jul 2013
Chapter/Region: MWSOC
Location: MO
2008 STI


Originally Posted by BlackFighter View Post
Yes, you have to be careful using UOA to identify a failure. Unless you tested your oil before and after it is hard to tell where the metal is coming from, and like Waddlz said, different oils can give you different UOA results.

120 psi in all 4 cyl is good news. Do a leak down test just to be sure.
Unfortunately I did not get a UOA when the engine was first built to be able to make a comparison. I will try to get a leak down test done and maybe another compression test for good measure.
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