Oc600
OC600 is Lubricating oil, compounded, consisting of 94% mineral oil and 6% rapeseed oil (I think its now called Canola oil). Viscosity range 29 to 32.
OM220 - don't have a listing for that.
The 'C' series oils and compounds are corrosion preventatives that apply a coating to components, either hard or liquid, depending upon the spec. number.
Mike
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