whats in your engne?

  1. keithkz

    Engine oil for I/O's

    What viscosity oil are you guys putting in your I/O? I have the (2005 year) 5.7L Volvo Penta (280 HP) which is basically a 350 Chevy. I changed the oil myself 2 years ago and honestly cannot remember what I used other than it was Mobil 1. I have the engine manual and in the chart it lists...
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