LUCAS OIL EXTREME DUTY MARINE ENGINE OIL SAE 20W-50 - (6) 1 QT. BOTTLES•Excellent for use w/supercharged turbo charged or nitrous oxide high performance engine •Safely blends & is compatible with synthetic & non-synthetic oils •Petroleum & semi-synthetic SAE 20W-50 grades •Contains effective anti-wear agents detergents Lucas unique additive chemistry & friction modifiers (molybdenum) •Proven performance in marine applications •Compatible with methanol & all racing fuels •Zinc & phosphorous chemistry provides excellent boundary lubrication at start up •Conventional grade is factory fill for ILMOR high performance engines