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1. Valve Adjustment that was 30K overdue. all valves were off spec and 4 were stuck shut.
2. Cleaned the sump screen. havent done that in over 60k. only oil and filter change.
nothing alarming from the screen. oil was pretty clean.
3. Changed oil grade from 10w/40 to 15w/50 Mobile 1.
Read that 15w/50 has higher content of Zinc and Phosporous
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Carl,
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