Fully synthetic engine oil 
It has been developed to meet the specific requirements of engine manufacturers. Today's high-performance engines need an engine oil that keeps up with changing needs and improves engine performance and extends engine life. This is why Shell developed engine oil from natural gas with our patented Shell PurePlus Technology, which it uses in the production of synthetic base oils.   Shell Helix Ultra is a range of high performance engine oils developed with the unique Shell PurePlus Technology, which produces an engine oil that actively helps keep engines clean.  Active Cleaning Technology has always been at the heart of Shell Helix. Starting with the unique Shell PurePlus Technology enables the product to provide much higher levels of cleaning and protection. 
What Does Shell Helix Ultra Professional AG 5W-30 Do? 
It has been developed to meet the particularly demanding requirements of high performance engines, including those requiring API SN or ACEA C3 with General Motors. It was developed through years of technological collaboration and lubricant research work between Shell and General Motors. It has undergone extensive performance testing for compliance with GMW16177 (dexos2™) engine oil specification.
Specifications: API SN; ACEA C3; GMW16177 (dexos2™)