Issue link: https://read.dmtmag.com/i/112433
By Tom Kelley By Tom Kelley MAINTENANCE MATTERS The Slippery Truth L A Closer Look At Synthetic Motor Oil ike many petroleum products, motor oil is made up from a recipe of several ingredients to deliver a ���nal product with speci���c performance characteristics. Be- tween 75% and 85% of the recipe is made up of what is referred to as ���base stock,��� which is the actual lubricating oil, with the remaining 15% to 25% made up of additives, each / OWNER OPERATOR/MARCH 2013 / / 60 OO 0313_text.indd 60 2/6/13 4:29 PM