You should load up on the ZDDP at the Turbo Buick events. They are usually $7.00 Advance and Walmart sell the leading brands 5 qt. of dino oil for $15.00 or less. Thats only $22.00 for a piece of mind.
Or you could by 6qts. Brad Penn 10w40 and add their version of Engine Assembly Lubricant. It's under $45.00 in my area.
Joe