Fuel Injection Cleaning and Induction Service - 50k miles

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by UoD, Feb 14, 2014.

  1. Okinawa

    Okinawa Senior Member

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  2. Okinawa

    Okinawa Senior Member

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    I think you made the right move in declining it. My Prius had 20,000 miles on it and that is the same pitch my dealer gave me. I was having a senior moment and I let them do it. I have since changed dealers for a couple of reasons and the dealer I now have does not seem to rip me off for unnecessary things. YET.
     
  3. Umar Ali

    Umar Ali Member

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    When i bought my car i ran about atleast 10 to 15 tanks of 93 grade gas and then did research n found out i dont need higher octane. It did reduce my mpg. Started putting regular 87 which improved mpg. But i make sure that i always use tier 1 gas not just any brand, i prefer shell which is tier1 and has higher level of detergents resulting in less likely buildup of carbon.
     
  4. johnHRP

    johnHRP Junior Member

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    In general, Prius 3rd gen can get benefit up to octane 89 or midgrade. Above it, the benefit is not much. Ocassionally I heard rattling/pinging from mild detonations on my 2nd gen Prius and 2004 Sienna with 87 regular. It reduced significantly when I use premium 93 gas from Shell. I believe the reason is running too lean with E10 10% ethanol, when government forcing us in 2008. Cars pre-2008 was designed for 0% ethanol and it shift the mixture too lean and create mild detonations (sounds like rice on aluminum foils). I experience it on: Camry 2002, Altima 2002, CRV 2003, Prius 2006, Sienna 2004. But E10 works fine on my 3rd gen Prius engine in Auris hybrid 2015, PriusC/Yaris 2014, Golf 2017, etc. Although I still prefers E5 because 1-2% more power with price difference also 3-4%. E10 kills catalytic converter faster than E5 or no Ethanol.
     
  5. Grit

    Grit Senior Member

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    :cool:
     
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