Overview: Formulated for marine environments, this synthetic oil is certified NMMA FC-W Catalyst Compatible-the standard for marine engines with catalyst. Viscosities Available: 5W-30 and 10W-30 HPM Motor Oilīreaking the Code: High Performance Marine A zinc/phosphorous additive makes it ideal for use on flat-tappet engines. It also uses a combination of detergents to remove deposits and protect against corrosion. Overview: Another of Royal Purple’s synthetic oils with Synerlec additive, HMX motor oil is specially formulated to revitalize hardened seals, reducing oil consumption in the process. HMX Motor Oilīreaking the Code: High Mileage (we’re not sure what the X stands for)Īpplication: Vehicles with more than 75,000 miles. It comes in a variety of weights for specific motorsports applications and racing fuels.ĠW-5-ultra low viscosity for the most competitive classes such as Pro Stock, Comp Eliminator, and NASCAR Cup.ĠW-10-for gasoline engines used in drag racing.ĥW-20-works with alcohol, methanol, and nitrous oxide.ĥW-30-designed for bracket racing, oval track racing, and other applications.ġ0W-40-made for marine, oval track, and endurance car racing where long periods of extreme heat are present.Ģ0W-50-designed to handle extended periods of extreme pressure and heat and is ideal for sprint cars, tractor pulling, and bracket racing. It features the proprietary Synerlec additive mentioned above for metal protection, but adds in other performance-enhancing additives. Overview: XPR motor oil is formulated to handle the heat, wear, and tear experienced in extreme racing engines. HPS oil also offers added viscosity to improve the sealing between the piston rings and cylinder walls and is fortified with zinc/phosphorous to reduce overall engine wear and work well with higher lift camshafts.Īvailable Viscosities: 5W-20, 5W-30, 10W-30, 10W-40, 20W-50īreaking the Code: eXtreme Performance RacingĪpplication: Multi-platform racing environments-NASCAR, NHRA, World of Outlawas, and Bonneville. This allows the oil to reduce friction even in modified, powerful engines. The synthetic oil features Royal Purple’s proprietary Synerlec additive, which improves the surface condition of metallic components and areas within the engine. Overview: Specially formulated for street performance vehicles that require a higher level of protection than the base API-certified oil, this oil is recommended for cars and trucks that are no longer under warranty. HPS Motor Oilīreaking the Code: High Performance StreetĪpplications: High performance and modified engines. It’s a synthetic oil that has a combination of additives that provide good wear protection and optimize the life of the vehicle’s emissions catalyst system.Īvailable Viscosities ( see our original post on deciphering viscosity): 0W-20, 0W-40, 5W-20, 5W-30, 5S-40, 10W-30, 10W-40, 15W-40, 20W-50. Overview: That API certification means this particular oil is certified to meet the automotive manufacturer’s standards, so you can use it without affecting the vehicle’s warranty. To clear up the confusion, we’ve put together this quick guide to choosing Royal Purple motor oil. The names get an “A” for conciseness, but their meanings are about as clear as the oil itself. The company’s motor oil product line includes API, HPS, XPR, HMX, and HPM oil-plus other oils for motorcycles and dirt bikes. While Royal Purple is clearly one of the more trusted names for motor oil and lubricants, things get a little murkier when it comes to the names of its motor oil. And Royal Purple motor oil is trusted by some of the top racers and engine builders in the industry. Its products are used by competitors in NHRA, Sprint Car, Circle Track Late Model, kart racing, and other circuits. The company has been making high performance lubricants for decades. For example, you’ve probably heard of Royal Purple. A lot when it comes to brand recognition.
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