On Sunday, May 16, 2021 at 9:43:44 AM UTC-4, Francis Strelok wrote:
On Sun, 16 May 2021 04:10:40 -0700 (PDT), Thomas
wrote:

On Sunday, May 16, 2021 at 3:50:42 AM UTC-4, Francis Strelok wrote:
On Sat, 15 May 2021 10:38:04 -0700 (PDT), Thomas
wrote:
2012 Juke has cat issues according to mechanic.
Bought Cataclean to dump in gas tank. 15 bucks give or take. Does this stuff work? Need a week or 2 to try. Full tank. Need 4 gallons ish to add.
I will report back, just wondering if it can help.
Damn nissans are draining me.
I haven't personally used it, but I'd recommend a long drive on the
highway to really heat up everything to burn up and pass anything that
might've collected in the catalytic converter.

What happened in the engine that resulted in build up in the cat?
Took it for a rattle I could not find. Sounded like a loose heat shield. Maybe I am being gamed?
If you're diagnosing a rattle, no snake oil in a can is going to help
most likely,

I would have stopped with that, or just not going to help period. I'd be
skeptical that any additive is going to fix a catalytic converter period.
Some people think a cat failure is like the worst thing ever. I have a friend
who had a Honda CRV, the cat light would come on after long drives. He got
it through inspection once after that, next time he was obsessed with the
cat problem. I told him he could reset the light, wait for the monitors to be
set and likely get it through state inspection before the light came on again.
I looked up the cost of a new cat, it was around $300, which I told him.
Instead he went to the dealer for an oil change and decided to buy a new
car. They gave him $1000 for his Honda CRV that was in decent condition,
easily worth 3 times that or more..... Go figure.