Regal 2000 ES Owner's Manual page 281

Chapter 7
Recommended Lubricant Speci cations
Volvo Engine Oil Requirements
Due to recent EPA mandates on internal combustion engines new
units are built with catalytic convertors installed in the exhaust
manifolds, along with a system of sensors and computer controls.
ese newer engines require special oil requirements to extend the
life of the catalysts.
Refer to the Volvo engine operator's manual for the correct oil
requirements for catalyst type engines, or contact your nearest Regal
or Volvo dealer for further information.
For other engines not manufactured as catalyst engines refer to your
engine operator's manual for correct oil recommendations.
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