Has anyone tried using Bosch Fusion +4 spark plugs?

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Jeffery Merrill, Jan 14, 2018.

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  1. Jeffery Merrill

    Jeffery Merrill Active Member

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    Oops! I forgot to filter! The ones for my Corolla were $6. The ones for the Prius are the 4501s, and go for $17.99 each.
     
    #21 Jeffery Merrill, Jan 15, 2018
  2. TMR-JWAP

    TMR-JWAP Senior Member

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    #22 TMR-JWAP, Jan 15, 2018
    SFO and Jeffery Merrill like this.
  3. Jeffery Merrill

    Jeffery Merrill Active Member

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    #23 Jeffery Merrill, Jan 15, 2018
  4. edthefox5

    edthefox5 Senior Member

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    BOsch plugs suck. Google

    Bosch plugs suck

    Lots of comparisons between Bosch and NGK guess which one wins. Seriously I 5hought everyone knew the +4 was a horrible gimmick.
     
    #24 edthefox5, Jan 15, 2018
  5. Jeffery Merrill

    Jeffery Merrill Active Member

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    My two Corollas and an Accord beg to differ.
     
    #25 Jeffery Merrill, Jan 15, 2018
  6. DMC-5180

    DMC-5180 Active Member

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    It’s difficult to quantify any real savings or efficiency gains from gimmick spark plugs. If there was a real improvement, the auto manufacturers would install them in the factory because they need All the technology they can get to meet the ever increasing mileage standards. This is also true for snake oil aftermarket additives. Manufacturers only recommend regular oil changes using a specific weight or type. With Regular oil changes, todays engines will last forever. The rest of the vehicle will wear out first.


    iPhone X ?
     
    #26 DMC-5180, Jan 26, 2018
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