10w30 or SAE30 engine oil for your mower?

Discussion in 'Mechanic and Repair' started by MississippiLawnKid, May 11, 2014.

  1. MississippiLawnKid

    MississippiLawnKid LawnSite Member
    Messages: 31

    Which is best?
  2. TPendagast

    TPendagast LawnSite Fanatic
    Messages: 11,099

    Used to be SAE 30 was cheaper, but doesn't really look like it any more. a multi viscosity engine oil works for engines that vary in rev range (like a car or truck) SAE 30 works for an engine that typically runs and steady rpms (like mowers or tractors)

    I would simply use the cheapest one.
    10w30 won't hurt your mower.
    But like I said, it 'used' to be more expensive and now really isn't. So It used to be a waste to spend more to put fancier oil in there.

    I find in several cases, the 10 w30 is less expensive than SAE 30 now…but I think its based on who carries it, and how much volume they move.
  3. MississippiLawnKid

    MississippiLawnKid LawnSite Member
    Messages: 31

    Thanks for the reply. We run SAE30 (Oreilly's brand) in our hustler super z's. Is SAE30 better for hotter temperatures..??
  4. DA Quality Lawn & YS

    DA Quality Lawn & YS LawnSite Fanatic
    Messages: 9,296

    I use a good quality SAE 30 for nearly all of my equipment. As far as what is best, I think you will hear a variety of answers.
  5. Snyder's Lawn Inc

    Snyder's Lawn Inc LawnSite Platinum Member
    Messages: 4,530

    on kohler need to run 10w30 with just 30 you get lifter knock from 30w

    I run 10w30 in all my mowers

    I run Castrol oil
  6. herler

    herler LawnSite Fanatic
    Messages: 5,139

    Read your dang owner's manual !
  7. Tuttled

    Tuttled LawnSite Member
    Messages: 152

    5w30 Pennzoil in the 4 strokes, Lucas semi in the 2 strokes. May go to Pennzoil Platinum in mower I am dealing on......Kawasaki 6hp on a Gravely!. But I will read the manual when I buy it. Probably just stay with the regular Pennzoil so I don't have to carry another can of oil.
  8. The Don'z

    The Don'z LawnSite Member
    Messages: 114

    I use 10-30 Mobile 1 in all my 4cycle engines and Lucas in my 2 cycle.
    Posted via Mobile Device
  9. southerntide

    southerntide LawnSite Fanatic
    Male, from Alabama
    Messages: 5,957

    Good grade or Gravely SAE 30 in Kawasaki 21hp here
  10. rlitman

    rlitman LawnSite Bronze Member
    Messages: 1,763

    Total BS.

    Multi weight oil is made for a wider range of operating temperatures. Has ABSOLUTELY NOTHING to do with RPM.

    As said above, read your owner's manual. Often times, one or the other will be specified depending on the temperature range you are using it in.

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