Fuel Oil Specs

GradeMain quality constraintsTypical blend  Class

UK Light Fuel Oil (SG)

Visc5.0-8.2 cSt

 E

 Sulphur1 wt% max 
 Pour0 max (W) / 6 max (S) 
    
UK Medium Fuel Oil (SG)Visc13-20 cSt

 F

 Sulphur 3.5 wt% max 
 Pour24 max 
    
UK Medium Fuel Oil Visc13-20 cSt

 F

(10S)Sulphur1 wt% max 
 Pour24 max 
    
UK Heavy Fuel Oil (SG)Visc25-40 cSt

 G

 Sulphur3.5 wt% max  
 Pour 30 max  
    
UK Heavy Fuel Oil Visc20-40 cSt

 G

(10S)Sulphur 1 wt% max  
 Pour30 max  
    
FR FO 1% Visc 

9.5cSt min @20degC, 40cSt max @ 100degC

 
 Sulphur1 wt% max 
    
FR FO 4% Visc

9.5cSt min @20degC, 40cSt max @ 100degC

 
 Sulphur 4 wt% max  
    
BUNKERS    
FR IF180 Visc at 50 degC 140-180 cSt 
 Sulphur 1.5 or 4% max  
FR IF 380 Visc at 50 degC 300-380 cSt 
 Sulphur1.5 or 4% max  
FR IF 500 Visc at 50 degC 500 cSt max  
 Sulphur 1.5 or 4% max