There is a British Standard laid down for the control of synthetic rubbers. BS 3574 (1989) helps to determine shelf life – for instance, Nitrile (NBR) and Polyacrylic (ACM) are Group ‘B’ rubbers and have a 7-year life, whilst Silicone (VMQ) and Fluoroelastomers (Viton®) are Group ‘C’ rubbers and have a 10-year shelf life. PTFE and Leather do not come into this category but like the others should be kept in the original packing for as long as possible away from direct light, dust, and humidity. Ozone, which can also be produced by battery-driven forklift trucks has a very bad effect on synthetic rubbers. Finally, protect the sealing lip – DO NOT hang the seals on nails, wire etc.
Determining the best motor oil for your vehicle whether synthetic, synthetic blend, high-mileage or conventional oil, depends on several factors. Some are external factors, such as the climate you live in, your driving habits, or even the age of your engine. Other factors are fixed based on your vehicle's engine type and the manufacturer's specifications. This may be more than you wanted to know about the types of oil used in cars, but leave it to Firestone Complete Auto Care to give you complete information about your car. You don't have to be an expert on motor oil. that's why we're here. Visit or make an appointment at your neighborhood Firestone Complete Auto Care store today. Our tire and auto service professionals are always ready to serve you!