HT EXTREME 10,000 is an ultra-high performance, full synthetic, POE (polyolester) base stock lubricant formulated for extended service life. HT EXTREME 10,000 provides maximum protection for your Rotary Screw compressors and under normal operating conditions lasts up to 10,000 hours! HT EXTREME 10,000 is non-varnishing & non-foaming with an additive package formulated to provide maximum efficiency and lubricity.