That Cataclean got mixed reviews, for what that's worth.
Used an entire jug in my wife's car and...….nothing.
With her car the exhaust manifold and catalytic converter are all in one so it's big $$$$ to replace. First I replaced both o2 sensors....nothing.
The "check engine" light will come on for a week then go out for months then come back on. When I pull the codes it says it's the rear o2.
2015 Cross Country (bought new 7/11/15)
2015 Suzuki V-Strom DL650 (bought new 4/26/17)
1/4 turn throttle ring
VM-1 DR cams
Timing wheel +4
Lloydz high-flow air cleaner
Bassani baffled OEM mufflers
PC-V 118hp 116tq
If it's not broke, make it better