Sulfate in hydraulic or gear oil

fngMember

In my understanding , sulphation presents in Engine oil can come from poor fuel quality ( high sulphur acid).
My question is how can sulphate elevate in hyd oil and gear oils ? is sulphate part of oil additives since all oil analysis contain some amount sulphate usualy 17-20 ?

5/16/1812:45 AM

Original Post

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