Pyroil Starting Fluid (PYSFR11) is an 11 oz aerosol cold-start aid containing diethyl ether blended with petroleum distillates and an upper cylinder lubricant. The ether ignites at low compression and temperatures down to -40°F, helping diesel and gasoline engines fire on cold mornings; the upper cylinder lubricant reduces ring and bore wear during the start. Specifications Manufacturer Pyroil (Valvoline) Part Number PYSFR11 Product Type Starting fluid with upper cylinder lubricant Volume 11 oz aerosol Active Ingredient Diethyl ether + petroleum distillates Cold-Start Range Down to -40°F Typical Uses Cold-weather starting aid for diesel and gasoline engines Heavy-duty trucks, tractors, marine engines, and small equipment Spray a short burst into the air cleaner intake during cranking Do not use on engines equipped with glow plugs or factory cold-start aids unless the engine manufacturer permits ether starting fluid — improper use can damage pistons. Read the can label and SDS before use.
