I've used Lucas injector cleaner, I buy the big 32oz bottle and add some to my gas cars. I've had cars run noticeably smoother and seem to have a minor mpg improvement. However there is no scientific way that I have to measure smoothness. So its all my perception. Cleaner injectors make for better spray patterns and better atomization so it all stands to reason but I don't have numbers to back up that claim.

I've used seafoam as a fuel additive and I've also sucked it into a vacuum line to clean carbon out of a motor. I have had old American V8s run better after some seafoam sucked into the intake. But again this all my perception, I never pulled the intake manifold to see if the valves looked cleaner.

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68 280SL - 70 280SL - 70 300SEL 3.5 - 72 350SL - 72 280SEL 4.5 - 72 220 - 72 220D - 73 450SL - 84 230GE - 87 200TD - 90 190E 2.0 - 03 G500

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