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    Do my spark plugs go bad due to age and excessive use of fuel injector cleaners?

    Is this normal for old oxygen sensor? I didnt get any codes, the oscillation looked normal. It is just reduced fuel economy, so I changed with a denso oxygen sensor.
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    Do my spark plugs go bad due to age and excessive use of fuel injector cleaners?

    It is a 2001 Pontiac grand prix 3800 V6 117k miles.
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    Do my spark plugs go bad due to age and excessive use of fuel injector cleaners?

    I get close to 16 mpg in mixed driving. I changed the oxygen sensor it looked ash in color, some told me it was called silicone poisoning due to additives. I will take a picture of my oxygen sensor tomorrow.
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    Do my spark plugs go bad due to age and excessive use of fuel injector cleaners?

    A mechanic changed my spark plugs and wires 7 years ago in my car with 3800 v6 don't know if it is platinum or iridium but it is Autolite plugs and wires. I only put 15k miles since then. It is running okay but I am only getting 16 mpg. I changed my upstream oxygen sensor, it looked ash color, I...
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    Synthetic blend with the highest synthetic oil concentration?

    Thanks for the replies guys. Being a noob I learned today that even full synthetic oil is not 100% synthetic oil, so these companies are misleading the customers with their " full synthetic oil" marketing. Given the small differences between base oils from group I, II and III, almost everything...
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    Synthetic blend with the highest synthetic oil concentration?

    Hi Everyone, Synthetic blend is the "new" conventional oil, so I am using synthetic blend in my 3800 v6 Pontiac grand prix. Currently I am buying the cheapest synthetic blend I could find. Last time I got NAPA synthetic blend 5W30 for $12. Does anyone know which brand of synthetic blend oil has...
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    Mopar to replace the current v-8 with a inline 6 twin turbo? say it aint so...

    The engine is too complicated, the reliability will not be like the 300i6 or the slant six rather be like BMW twin turbo I6 or worse. It took several years for Chrysler to get pentastar to be a decent engine.
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    Should I change ICM if I recently changed my ignition coils?

    During the lock down time, I opened up my UIM and LIM hoping it was a plastic intake but to my disappointed it had green ac Delco metal gaskets, had to remove it and put felpro metal gaskets, I looked so dumb, because it was totally unnecessary to open up the engine.
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    Should I change ICM if I recently changed my ignition coils?

    Genuine GM ICM cost $172, which twice as much as the Delphi part $82. I thought Delphi made the GM part. There is also WVE by NTK ICM for $100, with ebay used OEM costs $35. Which is the better option?
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    Should I change ICM if I recently changed my ignition coils?

    I have 2001 Pontiac grand prix GT with 117k miles, which I bought in 2011, I put 20k miles in the last 10 years. I recently changed my coils as I had intermittent stalling issues, now it works fine. Should I proactively change the ignition control module given the age? What other things I should...
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