I have never used mine to drive, and decided to try to do it tonight starting with a full tank of gas. Man, to keep it in the black you gotta move slow! I am going see what kind of improvement I can see out of it. Anyone see improvement that is worth the reduced pace?

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1984 300SD Orient Red/ Palomino
1989 560SEC
2016 Mazda 6 6 speed manual
1995 Ford F-150 reg cab 4.9 5speed manual