I know an engineer on RR that hauls gas from the Robinson, Ill refinery. He asked worker at refinery, what's the difference between minimum EPA gas requirements and Top Tier? Answer, top tier has more detergents in it. Next question, Is there any difference in the detergent added for Marathon, Shell or 66 gas? Answer, No, it all the same detergent as the detergent used for minimum requirements just more. Now it's possible once the fuel gets to the gas station, the top tier gas stations may add more. I asked the delivery truck to my local Marathon if he added anything to the gas, NO!
I'm convinced it worth adding detergent to gas. My old 2007 GMC with 100K doesn't use oil. I've been changing my own oil at 3K and oil looked black. This time after using top tier gas, oil looked good at 4k. I changed it a day before winter arrived.
My old 2005 buick, 100k and doesn't use oil, I didn't use top tier gas in it and the oil looks very black at 2.5K. I might save money if I took the oil out of my truck and put it in buick. New twist on changing oil, from truck to car.
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Today's Featured Article - Restoration Story: Fordson Major - by Anthony West. George bought his Fordson Major from a an implement sale about 18 years ago for £200.00 (UK). There is no known history regarding its origins or what service it had done, but the following work was undertaken alone to bring it up to show standard. From the engine number, it was found that this Major was produced late 1946. It was almost complete but had various parts that would definitely need replacing.
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