FUEL OIL 

Type       Distallate  Distallate  Very light  Ligh        Residential 
           kerosene                residential residential             

Color      Light       Amber       Black       Black       Black       

degrees API    40          32          21          17          12 
(60 F)                                                                 

Specific        0.825       0.8654      0.9279      0.9529      0.9861 
gravity                                                                
(60 F)                                                                 

lb/US gal       6.87        7.206       7.727       7.935       8.212 

Btu/gal    137000      141000      146000      148000      150000 

Btu/lb      19850       19500       19100       18950       18750 



Note 1: American Petroleum Institute (API)                             

Note 2: btu/lb = 17780 + (54 x degrees API)                            

Note 3: Specific gravity (@ 60 F / @ 60 F) = 141.5 / (131.5 + degrees API)  
Data is from Staionary Engineering, 2nd edition, 
        by Fredrick M Steingress & Harold J. Frost, 
        published by American Technical Publishers, Inc., 
        in Homewood, Illinois 60430 in 1996, 
        pg 134, 
        ISBN 0-8269-4445-0