I purchased my 05 yamaha YZF R1 new it 2005, with 19,xxx on the OD i lost the engine using Honda GN4 10-40 this year, Now i cant claim for sure it was the oils fault but it was a crank bearing that toasted the rod and crank, so now i have my Beast back and Yamaha *local shop* filled it with lucas oil. I ran 600 miles on the Lucas for re-break in and dumped it in favor of Mobil 1 4T Racing oil. Im wondering or looking for comparable oils in the same performance catagory. Im dumping the oil for fresh every 1,500 2,000 mi. This is stricktly a street bike but i do run it, and it often see's redline or close to it.
im just wondering what others would consider using.
im just wondering what others would consider using.