My brother has a '93 GMC K2500 with a 350. It has over 360,000 miles on it. A couple of radiators, alternators, starters, fuel pumps, valve cover and intake manifold gaskets, but never anything related to oil. Truck still runs almost as good as when it was new. Gets same fuel mileage as new. Has never had anything in it since oil was changed first time but Rotella T 15w40. This also was used in 2 '82 Chevy Luv diesels that got parked with over 300,000 miles, because transmissions gave out, and the trucks were rusted out. Neither had ever had the valve covers off. With successes like that, I think we'll stick with what works, as long as it keeps working. I can't see paying extra for synthetic. It's a lot of hype, under normal circumstances and usage, as far as I can tell.
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Today's Featured Article - Product Review: Black Tire Paint - by Staff. I have been fortunate in that two of my tractors have had rear tires that were in great shape when I bought the tractor. My model "H" even had the old style fronts with plenty of tread. My "L" fronts were mismatched Sears Guardsman snow tires, which I promptly tossed. Well, although these tires were in good shape as far as tread was concerned, they looked real sad. All were flat, but new tubes fixed that. In addition to years and years of scuffing and fading, they had paint splattered on
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