In any case take the compressor to an authorized rolair service center to diagnose and repair the issue.
Rol air compressor oil change.
Rolair premium sae non detergent oil resists foaming provides excellent wear protection and protects against corrosion.
Premium oil for air compressor pump.
163cc 5 5 hp to 688cc 20 hp gas powered belt drive truck mount air compressors.
Synthetic oil for compressor pumps rolair systems.
Recommended change interval is 200 to 400 hours.
Oil packaged under the rolair name is blended with chemicals that resist foaming provide excellent wear corrosion protection and reduce carbon build up.
Rolair synthetic oil provides easier starting in extreme weather conditions and is compatible with other mineral oils.
Recommended change interval is 3 000 to 4 000 hours.
Also if you find yourself having to refill the crankcase frequently the compressor may be bypassing an excessive amount of oil.
Recommended change interval is 1 000 to 2 000 hours.
Remember to change the initial factory oil after a break in period of fifty hours.