Red Line 20WT Race Oil (5W20) is used by many top engine builders in Spec Miata and other low-power road race engines, and is also popular for 4-cycle karts. Motor Oil, 20WT Race Oil, High Zinc, 5W20, Synthetic, 1 qt Bottle, EachPopular for qualifying in stock car enginesUsed by many top engine builders in Spec Miata and other low-power road race enginesRedLine 20WT Race Oil is for Four-Cycle kart the Honda GX 200 and GX160, Â Yamaha/Burris F200, Briggs and Stratton LO 206/World Formula/Animal, Kohler, Techmseh and Clones