under valve cover, 2007 Mazda3i, 146,309 miles

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Sep 26, 2020
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mostly Pennzoil Platinum 0w20 in winter, 5w30 in summer. Twice a year oil change, about 5K OCI or less, esp in recent years.
Checked valve clearance (cam lash) while the cover was off, all were good; checked the VVT oil control valve oil strainer screen, was very clean. Cleaned the cam sensor. New OE gasket going in. L501-10-230. Will do oil change afterwards.

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Thanks guys for the replies. I am happy with the state it is. What prompted me to do it was that I saw some oil, not a lot, in the spark plug holes, except for #1 cylinder. I am glad the valve lash is still OK, given the bucket type valve lift design.
 
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