Regal HH oils are recommended for use in many circulating oil systems where antiwear is not required, as cylinder lubricants in double-acting reciprocating compressors, and for the lubrication of both cylinders and running gears of single-acting compressors.

Because of their compatibility, Regal HH oils are good for flushing lubricant systems as well.

Regal HH oils can be used for hand oiling. Their high viscosity index makes them suitable for use over a wide temperature range.

Do not use Regal HH in high pressure systems in the vicinity of flames, sparks and hot surfaces. Use only in well ventilated areas. Keep container closed.