You receive a 100% performance guarantee: you must be satisfied that a Hi-Gear product performs as represented or your purchase price is refunded. Hi-Gear products are safe for your vehicle and will not void the manufacturer’s warranty. Many critical products, like highly flammable products, are packaged in metal containers to provide maximum safety in storage and use. Hi-Gear products are constantly updated as vehicle drive trains and fuels change. Hi-Gear products are always competitively priced and always provide the highest performance quality in the industry.