Car has just over 60K miles on it. After last several oil changes have
noticed a lot of what sounds like valve noise under acceleration. Oil level
in the car is still full. Have been changing with 5w30. Should I switch to
10w30? Any thoughts?

--
Bill
"Man is the best computer ... and the only one that can be mass produced
with unskilled labor." - Werner Von Braun (1912-1977)