Hello I know there has to be threads on this but I have something different. I was thinking of getting aimsoil for my oil change but after talking to my fleet manager at my police department, he said they used it before Abd it was crap. The reason why because the oil I'd only for high race performance and not for daily use. And the police chargers wernt racing that were know of so the oil was not being treated it to what it is made for so it would create copper in the valves and mess the valves up due to friction. This killed any chance of me using aimsoil, they sent the oil to the lab abd that's what they were told. Would royal purple act the same? I switch my mind to ry but my fleet manager hasn't use it on the chargers.