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 - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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