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?