If you do not have the owner’s manual, the engine service manual implies the following factory schedule:

This section helps you verify you have the correct variant. It includes engine serial number locations and explains the difference between the 3SZ-VE and the 3SZ-VE2 (which has lower emissions and a different intake manifold).

The official service manual for the 3SZ-VE is a comprehensive document essential for major repairs and maintenance. It is typically structured using Toyota’s standard Technical Service Bulletin (TSB) and Repair Manual formatting. Key sections usually include:

4.1 General Maintenance

4.2 Engine Mechanical

4.3 Fuel and Emission Control Systems

4.4 Electrical Systems