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Final update on this topic. I've now driven about 400 miles since replacing the plugs. I've had no more P0420 codes and my mpg is up the 50.5.
DOLJ - Thanks for the advice on the P0420. I'll watch it for the next month. After the first 100 miles, the mpg is up to 50.2 which is a good sign.
I'm back with an update on my 300,000 mile 2008 Prius. I changed the spark plugs. Pictures attached. Quite a difference! Immediate difference...
Sounds like I should skip the cleaner and go straight to the tune-up. Thanks for the advice.
Re-opening this after some time away for family matters. I rolled the Prius over 300,000. It is not generating any check engine codes, but the...
Thanks for the quick replies! I've never used any kind of additives to fuel or oil. I change the oil every 5,000 miles with Mobil 1. But I...
Hey everybody! I'm back on this topic after some eventful weeks (not related to the Prius). The latest updates are: I replaced the battery and...
MAX2 & JC91006 - We are the original owners of the car since 2008. I know it "like the back of my hand". At about 295,000 miles, we loaned it...
Thanks. I was concerned that I would be required to go through some kind of extensive "setup procedure". Hopefully the factory default settings...
The backstory is a divorce and a neglected 2008 Prius with just under 300,000 miles. The 12-volt battery is now completely dead. The car was...
ChapmanF - you and I have chatted before in this forum. I am trying to decide if the Prius is worth trying to "save" or just let it go. Is there...
I forgot to mention that I did NOT get a check engine light. We have talked about giving this car to our daughter who drives 2 children in...
My 2008 Prius is a few hundred miles from 300,000. Last night, driving on dry pavement at about 55 mph, perfect driving conditions, the car...
