How old is your oil???

Discussion in 'Lawn Mowing Equipment' started by Pierre2013, Jun 30, 2013.

  1. Pierre2013

    Pierre2013 LawnSite Bronze Member
    Messages: 1,160

    Two days ago I was in a store selling Exmark and Hustler ZTR. Since it was my first time in that particular store, I looked around to see what they were selling on the shelves. I was shocked when I saw that some of the various brands of engine oil had an API as old as SH. SH and earlier ones are considered obsolete.

    The current and most up-to-date oil you can buy as an API of SN. SJ, SL and SM are still ok to use, but you are not doing yourself and your engines any favor if you use anything less than SJ.

    So you might want to make sure that you are using an oil with an up-to-date API irrespective of the brand and the type of oil used.

    Btw, in my new mower I'm using (conventional oil) Tutela 10w-30 with an API of SN.
  2. Keith

    Keith LawnSite Gold Member
    Messages: 3,979

    You can walk into stores down here and find 'SA' oil. Popular in convenience stores and places that have a cheaper line of oil. Fine for your 1928 engine. Not so red hot for your 94.
  3. Pierre2013

    Pierre2013 LawnSite Bronze Member
    Messages: 1,160

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