Lexus CT200H Manual page 645

Oil viscosity (0W-20 is explained here as an example):
• The 0W in 0W-20 indicates the characteristic of the oil which allows
cold startability. Oils with a lower value before the W allow for eas-
ier starting of the engine in cold weather.
• The 20 in 0W-20 indicates the viscosity characteristic of the oil
when the oil is at high temperature. An oil with a higher viscosity
(one with a higher value) may be better suited if the vehicle is oper-
ated at high speeds, or under extreme load conditions.
How to read oil container labels:
Either or both API registered marks are added to some oil containers to
help you select the oil you should use.
1
API Service Symbol
Top portion: "API SERVICE SN"
means the oil quality designation
by American Petroleum Institute
(API).
Center portion: "SAE 0W-20"
means the SAE viscosity grade.
Lower portion: "Resource-Con-
serving" means that the oil has
fuel-saving and environmental
protection capabilities.
2
ILSAC Certification Mark
The International Lubricant Spec-
ification
(ILSAC) Certification Mark is
displayed on the front of the con-
tainer.
CT200h_OM_OM76102E_(EE)
Advisory Committee
9-1. Specifications
641
9