Compair Compressor C20 & C42 oil

[Spanner Monkey]

I'm trying to find out the correct spec of oil for the air end so I can service my C20 and C42. Does anyone have service manuals on-line or downloaded for compair compressors? The only ones I can find (for free!) online are in Spanish and I don't 'Hablo Espanol' - apart from asking for beer on holiday...