Dunno if it's the best, but it's always been good enough for me. Their products are uniformly good IMO. If you're doing any engine assembly try their assembly lube...
quote: Originally posted by Ken2: How does Belray compare to Harley oil? One of the Schaeffer tech guys told me that he dynoed a Harley on both Harley oil and Schaeffer's 20W-50, and got 1-1/2 more hp with Schaeffer's.
I'm not sure Harley even uses Harley oil. A friend was at the plant a few years ago and they were using bulk oil in drums from varied manufacturers to fill new engines...
How does Belray compare to Harley oil? One of the Schaeffer tech guys told me that he dynoed a Harley on both Harley oil and Schaeffer's 20W-50, and got 1-1/2 more hp with Schaeffer's.