I have. No problems. Not sure if the fuel system cleaners are any better than Techron. The oil consumption additive seems to work well -- I have used it with Shell Rotella 10-40. The motor oil showed no difference -- tested with my '92 which has occasional valve noise at cold startup. The electronic spray works and has much less odor than the radio shack stuff. The tacky lube spray is magical!

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David
1986 300E Anthracite + ECodes + MB Mileage Award