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Suitable substitute for a straight 90w in the drives?

Sniffy ยท 2024-09-12 00:51

I have an older 90's Hitachi ex58mu that takes EP-90 oil for the drives. I can only find this in a marine application which has an additive package for corrosion due to salt water. Is this ok or are there a different alternatives? (80w-90 ok?)

Replies3
  1. #1Ben Witter2024-09-12 07:16

    yes

  2. #2Sniffy2024-09-12 12:56

    Is this a play on the "If you come to a fork in the road, take it." decision? Is the 'yes' for using the marine stuff, or is it that there is a different alternative? (or both)

  3. #3Nige2024-09-12 14:02

    A suitable alternative to an SAE90 EP oil would be an SAE50 oil meeting Cat TO-4 specification. We successfully switched a lot of Hitachi machinery from EP oils to TO-4.