ISO 150 Compressor Oil SAE 40 For Clarke Etc 1 Litre 1L. ISO 100 Compressor Oil SAE 30 For Clarke Etc 1 Litre 1L. 1L of Premium Grade Compressor Oil. Roller Chain. SAE 40 (ISO 150). Quality product blended and bottled in the UK for use in many piston air compressors.