Several Hundred Ships May Need Engine Upgrades to Cope With VLSFO 8 June 2020 Running lower-viscosity fuels constantly may be causing engine problems for some older ships.Author: Capt. Johnhttp://feedproxy.google.com/~r/shipandbunker/~3/guQDpP96sb8/888560-several-hundred-ships-may-need-engine-upgrades-to-cope-with-vlsfo