Most of Mitsubishi FUSO's industrial engine development is based on the improvement of the Ka Bus engine platform. FUSO's Ka Bus products are widely praised in Southeast Asia, but the quality of oil products in Southeast Asia is very serious, especially in the use of biodiesel, where manufacturing materials, processes, and blending ratios vary greatly. Nevertheless, FUSO's engines still maintain long-term reliable quality. Now, FUSO has transplanted this quality to industrial engines. Although there is no clear indication of the level of poor fuel quality that can be tolerated, in the mandatory tolerance testing of inferior oil products with sulfur content higher than 300ppm and biodiesel content reaching 15% conducted by production enterprises, it has persisted for more than 2000 hours without any malfunctions, demonstrating its strong tolerance to inferior oil products.
