LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2003 >> IS 300 Base, Standard >> Repair and Diagnosis >> General Information >> Specifications Index >> Common Specs & Procedures >> Engine Cooling >> Service >> Specifications
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Engine Cooling: Service: Specifications

COOLING SYSTEM SPECIFICATIONS

Application Specification
Coolant Replacement Interval 30,000 Miles Or 24 Months
Coolant Capacity 7.9 Qts. (7.5L)
Pressure Cap Standard Opening Pressure (2) 13.5-17.8 psi (.95-1.25 kg/cm2 )
Thermostat Opening Temperature (3) 176-183°F (80-84°C)
(1) The Toyota Super Long Life Coolant (SLLC) has been adopted.
(2) Minimum opening pressure is 11.4 psi (.8 kg/cm2 ).
(3) Thermostat valve lift should be .335 in. (8.5 mm) or more at 203°F (95°C).

THERMOSTAT R & I 

For removal and installation, see THERMOSTAT .

WATER PUMP R & I 

For removal and installation, see WATER PUMP .