What is the difference between SYNTEC and Castrol Edge?
Edge is a completely different formula from SYNTEC that contains a different mix of base oils and additives. Edge meets the GM4718M specification and offers guaranteed protections for up to 15,000 miles, or one year, whichever comes first.* Finally, Edge provides unsurpassed engine wear protection that no leading synthetic oil, not even Mobil 1, can beat. This has been proven in industry tests conducted at an independent testing facility.**
*Guarantee excludes severe service applications such as frequent towing and hauling, racing dirty conditions and extreme idling. If your vehicle is covered by a warranty, follow your car manufacturer’s recommended oil change/service intervals, which can be found in your owner’s manual.
**Results based on Sequence IVA wear test.
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