Review on 🚀 DURA LUBE HL-402409-06 Severe Catalytic and Exhaust Treatment Emissions Test, 16 fl. oz, 6 Pack - Enhance Engine Performance and Reduce Emissions by Randy Butler

This product did nothing to clear the CEL code on my Subaru Legacy but I think the cat is probably just cracked. I think the big difference is whether or not your catalytic converter is actually clogged/dirty or damaged. Everyone is probably saying it didn't work for them, they probably really need a new catalyst. Luckily I don't have to pass an emissions test because my car was built in 2006. Potential buyers, just keep that in mind. I can't say it works, but I'm not going to sit here and say it doesn't work either.