I also switched to the Shell 93 V Power, been running it since 109075 miles. I did get a P0420 at 110159 miles and another one at 110300. Last time I added Cataclean was at 108138, so I added another one this time at 110303. Like you, I did not notice any mileage or performance gains. My main reason for trying this gas is to see if the additives in this brand makes a difference in cat performance. I was stoked when I made it 1084 miles the first time, but was major disappointed when it popped 141 miles later. I am hoping that continued use will make a difference but I getting more convinced that the life expectancy is reaching, or has reached the end, and it's time to bite the bullet and have them replaced. I will try this gas a while longer and see if the second DTC was a fluke/anomaly...meanwhile, I did find the best prices on the infinitipartsdealer website:Larz wrote: ↑Mon Sep 30, 2019 5:19 pmChances are, regardless of which fuel station you purchase your fuel, that fuel probably came from Shell Oil (technically Royal Dutch Shell) - the largest gasoline supplier in the US. The difference from one brand to another (at the actual pump) are the additives and detergents used by Exxon Mobil Vs BP Vs Chevron, etc. Shell stations claim to have the best additives and they charge significantly higher prices than competitors. I have tried a few tanks of Shell with no noticeable difference in mpg or performance so I never went back. We must have standards though - I won't purchase fuel at any convenience store or any shabby looking station because I wonder if the underground tanks have rusty water and contaminants in them. If the station or store is unkempt, I assume their tanks are equally uncared for. I always by 93 octane (91 is not available here) and usually from the same Mobil station each time. I will never buy anything from BP - not after the destruction, the outright lies, and lack of humanity they showed and continue to show in the deepwater horizon disaster - not even if their prices were half what I currently pay.
Just an update, not sure if it's the colder weather but the code is popping up more frequently since my last post at 110300:Ilya wrote: ↑Sun Nov 17, 2019 5:16 pmI'm getting the same results Army since switching from Stewarts (local chain) 91 Non-Eth to Sunoco 93 (E10). Sometimes I'll go 500 miles without a CEL, sometimes I'll go 100. So I think like you it's just a crap shoot and most likely our cats are SOL. My hope is that I can get one more NYS inspection done next summer and when I get my bonus next November, fork over the $2,500-3,000 and just have them be replaced and continue enjoying my car for the next few years. Other than 2 or 3 little rust spots on the roof before the sunroof (from rocks I'm assuming) and this P0420 code, my car has zero other issues and I'll continue to drive it till it's not feasible to do so.
I was nervous to use them even though they have good pricing. If I needed something unofficial parts I'd possibly use them. If people here have never had issues with that site and they're offical I'd consider it.ken in az wrote: ↑Wed Jul 08, 2020 8:23 pmHave you tried here https://www.infinitipartsdeal.com/parts ... 02+A,14002
My headers from PPE are sweet btw
Their parts are genuine OEM. I don't fully understand the business model, but when I've made large orders, it seems like they fulfill it by sourcing from different dealerships.Rameek7daGod wrote: ↑Thu Jul 09, 2020 4:18 amI was nervous to use them even though they have good pricing. If I needed something unofficial parts I'd possibly use them. If people here have never had issues with that site and they're offical I'd consider it.ken in az wrote: ↑Wed Jul 08, 2020 8:23 pmHave you tried here https://www.infinitipartsdeal.com/parts ... 02+A,14002
My headers from PPE are sweet btw
I kinda seen that online. Luckily I found the Infiniti place with slightly more expensive oem products but their customer service is impeccable. Plus it's officialEdBwoy wrote: ↑Thu Jul 09, 2020 8:24 amTheir parts are genuine OEM. I don't fully understand the business model, but when I've made large orders, it seems like they fulfill it by sourcing from different dealerships.Rameek7daGod wrote: ↑Thu Jul 09, 2020 4:18 am
I was nervous to use them even though they have good pricing. If I needed something unofficial parts I'd possibly use them. If people here have never had issues with that site and they're offical I'd consider it.
Their website is impeccable, and their prices are most times the lowest for most items.
In my experience their downfall is their customer service. I avoid using them if I am buying anything that needs to adhere to a timeline.
If you recall, i suggested this fix on page 4Ilya wrote: ↑Mon Jul 27, 2020 5:54 amAfter speaking to some other mods/admins on this site, it was recommended I try this cheap fix ($12 bucks) before proceeding:
2 x https://www.amazon.com/gp/product/B000C ... UTF8&psc=1
Then follow this guide:
https://www.youtube.com/watch?v=kzm52m0AWSQ
Lets see if this works. I'll be doing this in the next week or two.
How did I miss this? Thanks Yoda!Yoda's Master wrote: ↑Tue Jul 28, 2020 9:19 pmIf you recall, i suggested this fix on page 4Ilya wrote: ↑Mon Jul 27, 2020 5:54 amAfter speaking to some other mods/admins on this site, it was recommended I try this cheap fix ($12 bucks) before proceeding:
2 x https://www.amazon.com/gp/product/B000C ... UTF8&psc=1
Then follow this guide:
https://www.youtube.com/watch?v=kzm52m0AWSQ
Lets see if this works. I'll be doing this in the next week or two.
codes-p0420-p0430-v8-catalytic-converte ... l#p6796396
I explored the option you did. I actually bought everything to do it. I think you're right as far as a fix and from what I've seen no one has posted on YouTube of any longterm failures or issues.Ilya wrote: ↑Fri Aug 21, 2020 7:45 amYes, we know that is the 'official' fix, but most of us don't have or don't want to spend the load of money it takes to fix this 'officially'. If I can spend $250 to fix a $2,500-3,000 issue, I'll do it all day and twice on Sunday.Rameek7daGod wrote: ↑Thu Aug 20, 2020 8:44 pmI had the P0420 Bank 1 issue for a few years.
I purchased this came with a sensor. I bought a sensor in addition but my mechanic saw it had one so I returned it.
https://www.infinitiofwestchesterparts. ... 1CX0A.html
https://www.infinitiofwestchesterparts. ... tedProduct
Gasket for the flange.
I only bought 3 parts for this project.
I didn't have to replace anything else. Problem resolved. They did have to cut the original manifold. I did not stay to see the work in total but it was in the shop for a day.
I sent the cut in half manifold to Infiniti of Westchester. I just got the email today Infiniti accepted it and I'm getting my core charge refunded.
I did get a hefty discount on the work because they're a close friend to a friend.
I did notice based on location the parts price changes. But I've bought all of my official parts from this location great customer service! They answered all questions promptly.
Infiniti's design when it comes to some part of this car is absolutely horrible. Who's bright idea was it to put the cats in the manifold? My M35x wasn't like that to my knowledge and neither were my two Nissan Maxima's.