Castrol GTX Classic 20W-50 Conventional Motor Oil, 1 Quart, Pack of 6 Item Description About this item Castrol Classic 20W-50 is suitable for use in automotive gasoline engines where the manufacturer recommends an API SJ or earlier specification 20W-50 lubricant. NOTE: NOT FOR USE IN MODERN ENGINES WITH CATALYTIC CONVERTERS OR WET CLUTCH APPLICATIONS Specialized additives containing high Zinc (1400 PPM Max) and Phosphorus for extreme wear protection Formulated to maintain tough and thick oil film even under severe conditions Minimal foaming and high resistance to thermal degradation Compatible with gasoline and alcohol-based fuels ? See more product details Castrol GTX Classic is a high-performance engine oil for push-rod, flat tappet engines and performance cam applications. It?s specially formulated for classic/collector cars, muscle cars, hot rods and race cars. It?s high zinc and phosphorus content helps prevent premature aging, wear and metal fatigue on engines with high tension valve springs or performance modifications that create high contact pressure and extreme internal temperatures. Payment We accept payment only through PAYPAL Shipping We ship products worldwide through standard express courier service, it will reach within 7 to 10 days to abroad buyers, we ship the product after recieved clear payment and give full information about shipment to the buyer Return We accept product return within 7 to 21 days from delivery date but product should be in original position and not in damaged condition,the return shipping charges will be buyer responsibility