in my truck, with the 7.3 liter IDI Navistar turbo engine, using either the PS diesel additive or the lucas additive nets a reduction in the high pressure injection pump noise. Try it, put additive in at the gas station, use earplugs, and after about 2 minutes, the pump gets quieter.

MM oil does the same thing. I use the shotgun approach: I rotate.

I can't tell if there is a difference in fuel mileage or power.

ATF work too, but I've always used it when I'm running dyed fuel. Truck seems off on power with ATF (1 quart/15 gal) in the tank. Like running a 2-stroke.

Red fuel is something like a 10,000 dollar fine. ATF could be a decent defense.

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1986 300e 5-speed 223k
1995 Volvo 850 T5 wagon 65k
1985 F-350 475k