SHIRINDA 40 SAE 40 TBN 40 is recommended for all 2-stroke engines running on low sulfur IMO 2020 compliant fuels. Suitable for all IMO 2020 and ECA compliant fuels. SHIRINDA 40 SAE 40 TBN 40 is a marine cylinder lubricant which has been designed specifically for slow speed 2-stroke engines using low sulfur residual fuels. SHIRINDA 40 SAE 40 TBN 40 maintains engine cylinder cleanliness and minimises deposit build-up on piston crowns, rings and liners. With its low BN and its conventional calcium carbonate chemistry, it is optimised to efficiently lubricate engines using IMO 2020 compliant fuels.