2018 Forester 6 speed manual FB25.
2 quarts top off added before 9,000 miles. Consumption due to PCV consumption. I have replaced the specified pcv valve with the newer larger pcv valve in the 2019 Forester, Ascent as well as the tubing to the intake manifold. Consumption since replacing valve with newer design has been less than 1/4 quart. All previous pcv valves the engine would consume oil on highway when valve had more than 2,000-3,000 miles.
Current fill is HPL 0w20 with 2,000 miles still no consumption on new design pcv valve.
Aluminum uptick has coincided with increase in the startup rattle this engine has had since brand new. I will likely take front cover off and inspect timing components. I suspect a bad tensioner, possibly bad cam phaser.
First 9,000 miles of oci were cross country road trip. The remainder were mix of highway and rural backroads. I generally drive conservatively but plenty of Italian tune ups and use of the full rpm range somewhat regularly.
2 quarts top off added before 9,000 miles. Consumption due to PCV consumption. I have replaced the specified pcv valve with the newer larger pcv valve in the 2019 Forester, Ascent as well as the tubing to the intake manifold. Consumption since replacing valve with newer design has been less than 1/4 quart. All previous pcv valves the engine would consume oil on highway when valve had more than 2,000-3,000 miles.
Current fill is HPL 0w20 with 2,000 miles still no consumption on new design pcv valve.
Aluminum uptick has coincided with increase in the startup rattle this engine has had since brand new. I will likely take front cover off and inspect timing components. I suspect a bad tensioner, possibly bad cam phaser.
First 9,000 miles of oci were cross country road trip. The remainder were mix of highway and rural backroads. I generally drive conservatively but plenty of Italian tune ups and use of the full rpm range somewhat regularly.
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