I didn't notice much of an improvment in anything really, made the SD's fuel a bit more clear. What I do know is it doesn't kill the algea that well, soon as I started using Biobor again my filters loaded up with the stuff. I suspect as a maintence additive its probably fine, but for bad algea problems Biobor is still the most affective.

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2016 Corvette Stingray 2LT
1969 280SE
2023 Ram 1500
2007 Tiara 3200