Bel Ray SL2 Semi-Synthetic 2T Motor Oil Bel Ray SL2 Semi-Synthetic 2T Motor Oil is a 2-stroke synthetic motorcycle oil that provides outstanding performance in 2-stroke motorcycle engines. Reduces exhaust smoke and prevents the build-up of carbon deposits to ensure longer lasting, better performing engines. Features: For injector/autolube systems, pre-mix ratios up to 50:1 Meets Jaso FD / Iso-L-Egd specifications