Ressha Gattai Diesel-Oh Diesel-Oh is the combined form of the first 3 support ressha of Diesel Ressha, Car Carrier Ressha and Tank Ressha. While Diesel-Oh lacks any weapons, its raw power is more than enough to compensate. Its finising move is the Diesel-Oh spinning kick, where Diesel-Oh jumps into the air, then crashes into the enemy feet first while spinning at high speeds. Diesel-Oh is the combined form of the first 3 support ressha, not including Shield Ressha. While Diesel-Oh lacks any weapons, its raw power is more than enough to compensate.