Please help asking MKK (Mitsubishi) oil purifier technicians About the U / NU / NNU TYPE Purifier use VLSFO the proportion of Gravity disc choice questions(U TYPR / SJ60EH: NU / NNU the TYPE / SJ80FH)U TYPE originally used low-sulfur heavy oil (SG 15℃ 0.99 to 1.00, separating temp 98℃, FEED RETE 3000 L/h), Gravity disc using the φA=71mm Currently using VLSFO (SG 15℃ 0.94 to 0.96, SEPARTING TEMP 70℃, FEED RETE 3000 L/h),according to the instruction manual should be used φA=133mm Gravity discHowever, all the U-TYPE return oil leakage after replacing the φA=133mm gravity disc), by replacing smaller specific φA=116mm gravity disc as unusable. Finally, can only be reused back to the φA=71mm gravity discPlease asking MKK (Mitsubishi) oil purifier factory technicians the following questions1. the type purifier (SJ60EH / SJ80FH) how the choice of fuel for the proportion of low viscosity VLSFO disc2. the specification is there a modified version of the accompanying chart for the VLSFO