4-Cycle Outboard Oils

  • pyake
    Posts: 167
    October 24, 2004 at 4:03 pm #1232975

    Coming up on my first oil change on my new Suzuki 90HP 4-stroke. Talking with the local Suzuki dealer, he definately favored using a Suzuki brand or Yamalube oil for the motor. He mentioned that there are anti foaming agents as well as corrosion protection for aluminum components in the motor.

    I have always been a big fan of Mobile-1 for my vehicles, and although it is not branded as a marine type oil, they do make a 10W-40 oil for motorcycles that meet the SAE requirements that are stated in the owner’s manual for my outboard.

    From a lubrication standpoint, what is different about a 4-stroke marine engine as opposed to any other small 4 stroke engine such as a motorcycle? What is everybody using for their choice of oils and why?

    Thanks

    gregmerz
    Minnetonka & Remer, MN
    Posts: 133
    October 25, 2004 at 11:22 am #325419

    I like the full synthetic’s. I’m using Amsoil’s 0W-40 in my four stroke.

    StaleMackrel
    Posts: 443
    October 28, 2004 at 3:18 pm #325791

    I use Amsoil in my Merc 90 four stroke. I think it makes starting easier in cold weather and I like it. In fact I use Amsoil lower unit gear lube and my impellar is going on the 5th season and is working great!

    smokercraft
    Posts: 40
    October 29, 2004 at 4:55 pm #325889

    I run Suzuki oil and filters in my 140. Costs alittle more but I only need to change once a year anyway. Never have had any oil related problems.

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