Gulf Ultrasynth X 5W-30 is fully synthetic energy-conserving oil for turbocharged gasoline engines in passenger cars, sport utility vehicles vans, and light-duty trucks. These oils are formulated to help improve and retain fuel economy, and protect vehicle emission systems and turbocharge components. These oils are compatible with conventional passenger car motor oil.
Oil is used in an engine to lubricate its moving parts. As the oil circulates in the engine it picks up rust, metal shavings, and dirt. The oil filter removes this debris from the oil to prevent engine wear caused by these foreign particles, keeping the oil in the engine clean.