I have been running PP plat syn and pen super syn in 3 vehicles and liked it. I just got a 2007 LTZ suburban 5.3"L and done first oil change with 5w30 super syn pen. In 3k it used a quart of oil. I added a quart and about to do a oil change soon going 5k oil changes. I have not checked it lately. I figure standard 10w30 was runned in it. It has 110,000 miles. I have not checked pvc valve yet either. The oil sending unit quite working also so got to replace it. its the thing that reads oil pressure. Vehicle runs fine and has no leaks. Bought from dealer few months back used. I have a 2000 Yukon XL with same motor no issues.
What should I do stay with what I'm using or change to something else?
What should I do stay with what I'm using or change to something else?
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