fuel system

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Across
  1. 4. heating value
  2. 8. not thermal but _________
  3. 10. required for fuel tanks
  4. 11. oil
  5. 13. connects cylindrical tanks
  6. 14. stores fuel
  7. 15. computer
  8. 17. diesel fuel
Down
  1. 1. water in fuel
  2. 2. filter
  3. 3. antiknock quality
  4. 4. ignition quality
  5. 5. resistance
  6. 6. point where vapors ignite
  7. 7. cleans fuel
  8. 9. cyclohexanol nitrate
  9. 12. filter
  10. 13. enables chemical reaction
  11. 16. compressed natural gas
  12. 18. NOx+HC+ultraviolet ight+time
  13. 19. water form