What type of oil do i use in a Chevy Trailblazer?

The type of oil you need for your Chevy Trailblazer depends on the year and engine. You cannot simply use a single type of oil for all Trailblazers.

To find the correct oil, you need to:

1. Locate your owner's manual: This is the definitive source for your vehicle's specific oil recommendations. It will specify the type (conventional, synthetic blend, or full synthetic), viscosity (like 5W-30 or 0W-20), and API certification (like SN Plus or SP).

2. Check the oil fill cap or dipstick: Sometimes the recommended oil type is printed on the oil fill cap or dipstick.

3. Use your VIN number: If you don't have the owner's manual, you can use your vehicle's VIN (Vehicle Identification Number) to look up the specifications on the manufacturer's website (Chevrolet.com) or a parts website like GMPartsDirect.com.

Without knowing the year and engine of your Trailblazer, I cannot tell you the correct oil. Using the wrong oil can damage your engine. Always refer to your owner's manual for accurate information.