Hot weather puts a lot of strain on your air-cooled motorcycle engine. PanAm sae 60 weight motor oil meets increasing demands of vintage and classic bikes, today and in the future. The PanAm Oils, Inc. traditional single grade lubricant for engine and transmission for heavy thermal and shear loads. Complies with Harley-Davidson recommendations up to 1984 for Big Twins and Sportsters up to 1981. This high performance lubricant complies with API CF. Sold by the quart, made in the USA. Motorcycle oils require high standards, and particularly the air-cooled engines of our preferred brand put higher strain on the motor and transmission oils than the water-cooled automotive counterparts. PanAm oils are produced and bottled in the United States. They are based on the best crude classes available which are refined to high quality mineral oils. Specific additives, partially synthetic, ensure that each oil is optimized for its requirements.