Attached is the UOA for my 2015 Silverado with the 5.3 Ecotec engine. Bought this truck back in March of 2018 with 53,000 miles on it. This oil change went 5866 miles. Oil and filter replaced. This was the first oil change I've done on the truck so residual from whatever the dealership used was still in the sump.
Any ideas as to why sodium is elevated? Coolant level has remained the same since I've bought the truck. Is Schaeffer's known for high sodium content in their add pack?
Any ideas as to why sodium is elevated? Coolant level has remained the same since I've bought the truck. Is Schaeffer's known for high sodium content in their add pack?
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