Tractor supply sells the 90W trans oil as "Ford transmission" pure mineral oil. Also has non-degergent 30W engine oil but who knows what is, or isn't in it.
PETROFLO LX-30W DIESEL ENGINE OILS are formulated to provide optimum performance in modern, low emission diesel engines operating under a wide variety of service conditions. They are blended with premium base stocks and high quality additive to achieve the following benefits: high temperature piston deposit control, foam protection, soot dispersancy and oil thickening control, oxidation inhibition, low temperature sludge protection, corrosion and rust inhibition, valve train wear protection and TBN retention.
PETROFLO LX-30W DIESEL ENGINE OILS are recommended for use in turbo-charged and naturally aspirated two and four cycle diesel engines. They may also be used in gasoline engines for the “mixed fleet” operator. These motor oils, provide excellent performance in local stop and go routes, on and off highway, farm construction and mining applications.
4-Cycle 30W Conventional Engine Oil, SAE 30, Briggs & Stratton Warranty certified, Formulated for 4 cycle small engines, For Lawn-mowers and all outdoor power equipment. 18 oz.