API CB Class

Section API classes for diesel engines, article 11 of 1274 words, 1 minute

In this section: 12 articles
  1. API CI-4 (CI-4 PLUS) Class
  2. API CH-4 Class
  3. API CG-4 Class
  4. API CF-2 (CF-II) Class
  5. API CF-4 Class
  6. API CF Class
  7. API SE Class: Diesel Engines from 1983
  8. API CD-II Class
  9. API CD Class
  10. API CC Class
  11. API CB Class
  12. API SA Class: Diesel Engines

Engine oils for diesel engines operating under medium load (obsolete class).

The class was approved in 1949 as an evolutionary development of the CA class, for use with fuel of raised sulphur content and no special quality requirements. API CB oils were also intended for use in turbocharged engines operating in light and moderate regimes. This class was often called "Supplement 1 engine oils," reflecting its compliance with the military specification MIL-L-2104A Supplement 1.