Glossary

Select a letter to go to the terms beginning with that letter.

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OA

Operability Additive

OBD

On-Board Diagnostics

OCP

Olefin Co-Polymer

OECD

Organisation for Economic Co-operation and Development

OEM

Original Equipment Manufacturer

OEMs

Original Equipment Manufacturers

OICA

Organisation Internationale des Constructeurs d’Automobiles (formerly BPICA)

OIT

Oxidation Induction Time

OPEC

Organization of the Petroleum Exporting Countries

OPEST

Oil Protection and Emission System Test

ORI

Octane Requirement Increase

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