I have twin 3116 turbos 350 hp. They have run flawlessly and now have 4,900 hours. Routine oil changes with CAT SAEO oil is the key to long life. (SAEO= Special Application Engine Oil) and is designed specifically for the CAT 3116 and 3126 marine engines. I run at 1,950 rpm most of the time although slower if I'm in the mood.
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Howard
Lucky Lucky
Stuart, FL
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