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DESCRIPTIONFor over 50 years, STP has been trusted by mechanics and drivers all over the world to get the best out of their engine. Today, STP continues to be at the forefront of additive technology and has developed a versatile product to solve your fuel related problems. STP Ultra is considered the ‘Rolls-Royce’ of additives, as it is a truly unique product in the category: a combination of high detergent additives with STP WEARGUARD technology, corrosion inhibitor and power booster.