Newly introduced solution for Wärtsilä 50DF engine further reduces methane slip by up to 75 percent April 10, 2025 International Shipping, LNG, Maritime, Shipping Line, Technology, Trending News LONDON : Technology group Wärtsilä has introduced a new methane slip reduction solution for its Wärtsilä 50DF dual-fuel engine. The new technology, which converts Wärtsilä 50DF dual-fuel (DF) engines to spark gas (SG) operation,