P0420 Cat Code vs. CATACLEAN - I think it worked...?

AlbatrossCafe

First Fill-Up (of many)
Location
Western WA
My X is a 2011 with about 107k miles. Ever since I hit 103k or so, I've been getting intermittent P0420 code (passenger side cat). It first turned on for 100 miles on a road trip, and then went away for next 1000. Then it came back on for a week, off for a week, and has been like that for the last couple months.

I'm aware that this code could mean that your cat is failing or that something up or down the line has a problem as well. Rather than throw a bunch of money or parts at it, I tried what I had seen recommended from someone else - a product called "Cataclean". It was pricey for a 16oz bottle (something like $27 at AutoZone) but certainly way cheaper than a new OEM cat for $600! Basically, you pour it into your gas tank at 1/4 capacity, drive for 15+ miles, refill, clear the code and see if it worked.

I poured it, drove for about 25 miles and the light had already turned off before I even got a chance to fill the tank and clear! Success? You could say that "your light was intermittent and was going to turn off on its own" but the fact that it turned off pretty much immediately after using it leads me to believe that it worked.

I'll keep this thread updated to let you guys know if the code stays away. But initial observation - This is my preferred $30 solution for catalytic converter codes!

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outback97

First Fill-Up (of many)
Supporting Member
Per the SDS it's a blend of four solvents. I wonder if there's anything else in there that's not listed.

https://seattleautomotive.com/files/SDS/12007 cataclean.pdf

1. Hydrotreated light distillate (petroleum) 64742-47-8 5.0 -10.0 %
2. Xylene (mixed isomers) 1330-20-7 30.0 -60.0 %
3. 1-Propanol 71-23-8 10.0 -30.0 %
4. Acetone 67-64-1 10.0 -30.0 %

Pretty good profit margin if that's all that's in there, but if it works, great! Please keep us updated.
 

Prime

Shut up Baby, I know it!
Admin
Location
Denver Adjacent
Used to put xylene in the tank back in the day just as an octane booster. It was cheaper than buying premium gas. Haha

Please keep us posted on the progress for this. I'm over 150k and I know cats will start fouling sometime soon.
 

AlbatrossCafe

First Fill-Up (of many)
Location
Western WA
Have you noticed any change in performance or MPG since you did this?

Hard to tell. It's winter and I'm in 4wd and on mountain passes a lot. I can't imagine it really does more than 0.25mpg though... so much other crap on my X holding it back lol

@Prime still promising so far. No Service Engine Soon light in the last 20 days. It would have come on by now otherwise
 
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westslope

First Fill-Up (of many)
For the curious, the Dura Lube Catalytic Cleaner SDS is attached. Component percentages are not supplied.

DuraLubeCatalyst_components.jpg
 

Attachments

  • HL-402409-06 Dura Lube Severe Catalytic Exhaust Treatment SDS.pdf
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outback97

First Fill-Up (of many)
Supporting Member
That's too bad, sorry to hear it.

Thanks for updating the thread even if it wasn't great news.
 

AlbatrossCafe

First Fill-Up (of many)
Location
Western WA
BTW I forgot to mention another update:

That light only came back on for one or two drives. Now it has been off since. That's going on close to a month light-free without me doing anything. Not to make it more complicated.... Lol
 
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