What type of oil does the Cadillac CT5 use?

1 Answers
NatalieLynn
07/29/25 5:28pm
The Cadillac CT5 model uses 5W30 fully synthetic engine oil with a replacement capacity of 6 liters and a service interval of 7,500 kilometers. The main functions of engine oil are as follows: 1. Lubrication and friction reduction: Forms an oil film between two sliding components to prevent friction during operation, ensuring smooth movement. 2. Auxiliary cooling: Absorbs heat from engine operation when oil reaches moving parts, then carries the heat away to assist in component cooling. 3. Cleaning: Carries away carbon deposits, sludge, and worn metal particles from engine components back to the oil pan through circulation, flushing contaminants from part surfaces. 4. Sealing: Creates a seal between piston rings and pistons to reduce gas leakage and prevent external contaminants from entering. 5. Rust and corrosion prevention: Adheres to component surfaces to protect against contact with water, air, acidic substances, and harmful gases. 6. Shock absorption: Cushions sudden pressure increases in engine cylinders that would otherwise heavily load pistons, piston pins, connecting rods, and crankshaft bearings, absorbing impact through lubricated bearing surfaces.
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