by Robert Sanborn on Mon, Jul 30, 2007, who was a member of the STLE Society of Tribologists and Lubrication Engineers for 15 years.
The owner of Practical Rent-a-Car in Bozeman, Montana wrote that one of his cars was driven over ten miles with no oil filter. Upon inspection of the engine the crankshaft and rods were still in good shape. The car is still in use. Relayed that SFR’s ProTecta Engine Treatment saved this engine from a major overhaul.