What is the oil weight for a 1999 Chevy Suburban?

The recommended oil weight for a 1999 Chevy Suburban depends on the engine type and temperature range in which the vehicle will be operated. Here are the recommended oil weights for different engine options and temperature ranges:

5.7L V8 Engine:

- For temperatures above 0°F (-18°C): SAE 5W-30 or SAE 10W-30

- For temperatures below 0°F (-18°C): SAE 5W-20 or SAE 0W-20

6.5L Diesel Turbo V8 Engine:

- SAE 15W-40 (all temperatures)

7.4L V8 Engine:

- For temperatures above 0°F (-18°C): SAE 5W-30 or SAE 10W-30

- For temperatures below 0°F (-18°C): SAE 5W-20 or SAE 0W-20

8.1L V8 Engine:

- SAE 15W-40 (all temperatures)

It's important to consult the owner's manual or a reliable source of automotive information to verify the specific oil weight recommendation for your 1999 Chevy Suburban, as the information provided here may vary based on the exact model and trim level of your vehicle.