How to Identify Fully Synthetic and Semi-Synthetic Engine Oil?

[JeremiahRose]

The method to identify fully synthetic and semi-synthetic engine oil is to check the oil type indicated on the manufacturer's bottle packaging. The steps to change engine oil are: 1. Lift the car, remove the protective plate, and place a container under the oil drain plug; 2. Unscrew the oil drain plug, use an air gun to blow for two minutes at the oil filler port, after draining, tighten the oil drain plug and wipe it with a paper towel to check for leaks; 3. Reinstall the protective plate, lower the car, and add oil through the filler port. Precautions for changing engine oil: 1. Perform the change when the engine is warm to ensure the old oil is drained as completely as possible; 2. Add oil and ensure the amount is appropriate; 3. After adding oil, start the engine and check all components for leaks, run the engine for 3 minutes to confirm the oil level reaches the normal mark.