12 Millimeter Lock Washer | Crusader RS7071

12 Millimeter Lock Washer | Crusader RS7071 12 Millimeter Lock Washer RS7071 Lock Washer 12 Millimeter Replaces Crusader 21113, 93950000, 93950030 | Pleasurecraft Marine RS7071 Frequently Asked Questions Is there an octane grade that is advised for Crusader engines given the current rise in gas prices? Maximum performance is attained while using 87 octane fuel since Crusader fuel injected engines are tuned to run on it. For usage with the factory-set ignition timing, premium regular gasoline with a (R+M/2) octane rating is required. Does crusader recommend a specific type of oil for their engines? Use a high-quality SAE 15W-40 "SJ" when the average temperature is over 50 degrees Fahrenheit. Use SAE 5W-30 "SJ" below 50. It is not advised to use synthetic oils in Crusader engines. Explain Crusader's position on ethanol use? This warning only applies to CRUSADER engines and their usage of ethanol fuels. The usage of ethanol fuels in vessel-related parts such boat gas tanks, boat fuel li