I would like to thank Lucas for producing a quality line of products I feel confident using in my drag race engines. I am a small time grass roots racer so every dollar I spend is important to me. I cannot afford failure due to improper oiling. I use your 20/50 non synthetic oil for break in with 1 quart of Oil Stabilizer and 20/50 Plus sythetic with a quart of Synthetic Stabilizer for the Street and the Strip. I also use Sure Shift Trans fluid in my trans brake equipped 700R4 and your 85/140 Gear Oil in my Currie 9in Ford rear end. Again I appreciate the quality in your products: All the vehicles I own have Lucas Oil keeping them alive!