If you want to try a different oil to quiet things down, I've had good luck with Chevron Delo 15W-40. For some reason it makes my valvetrain in both my BMW and my 261 a lot quieter. It also has a good detergent package and is relatively inexpensive. It's rated for both diesel and gas.


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A lone amateur built the Ark. A large group of professionals built the Titanic.