Question about 2007 Toyota Tacoma

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Spark Plug Life

My owners manual for my 2007 Toyota Tacoma says to change my spark plugs every 30,000 mile. A friend told me that unleaded gas does not foul the plugs and they should last a lot longer than 30,000 miles. Should I do what the manual says or not?

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Hi.

30,000 miles is about right for changing standard spark plugs. You can install upgraded (and more expensive) Iridium tipped plugs which are claimed to last up to 100,000 miles but on a standard vehicle 30,000 is the correct replacement mileage interval.

Stick to the vehicles recommended service schedule and never mind what your friend says! Afterall these service intervals are already designed for a vehicle running on unleaded!

Carbon build up on plugs has a lot more to do with correct oil and oil filter changes than unleaded fuel.

Hope this helps. Please do rate my answer

Posted on Jul 30, 2009

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At 30,000mile the spark plug gonna lock like brand new its maintenanse you can wait to change them it wont hurt but for the car to run perfectly they suject to change them its like oil change some people do it every 3,500 miles some never change it who gonna drive longer with there car a guy who do good maintenance or the guy who dont changew is oil good maintenance is the way to go thanks pierre

Posted on Jul 30, 2009

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Unleaded gas does foul the plugs...in some cases,even more than leaded, i'd advise to follow your manual, and also, every 3 full tanks of gas, use a fuel addative, this will counter act the future build up

Posted on Jul 30, 2009

  • partyman6666 Jan 27, 2011

    If you're adding fuel additives to your vehicles tank every 3 tank-fulls of gas in hopes of keeping the plugs clean, you're wasting your money. It's much more cost-efficient to just change the plugs out every 25-30K miles like you're supposed to, than to spend the hundreds of dollars on fuel system treatment that you would be have to in order to do a fuel system treatment ever 3rd fill-up throughout the duration of the recommended 30K mile spark plug maintenance interval. If your MAF sensor and oxygen sensors are operating efficiently, you should never have any problems with fouled plugs on a modern vehicle within the first 40-50K miles of plug life.

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