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Old 10-30-2000, 09:16 PM
Posts: n/a
I spoke to my mechanic. He said that the rings are fine and the oil on the plug threads are anti-seize compound (i feel really stupid). The carbon, he thinks, is from not driving the car long enough for it to reach normal operating temp (i only drive 8 mi a day - one way) OR it could also be the injectors. I'm using Bosch Platinum +4s but he doesn't see any problems with those. He said a couple of his customers claim to be getting better mileage with them.

I'll change back to normal copper core to be safe and start using injector cleaners. I feel much better. Thanks for all the advice.

89 300E

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