About a month after getting my 2016 chevrolet camaro RS. I noticed a smell, that at first I chalked up to being from a gas leak on a line that ran underground, directly below my driveway. It was so bad that we noticed residue on our clothing. And it followed us no matter where we parked. We even stayed at my parents, which is difficult having being in our late 20's early 30's with a 10 year old boy. So Father's day night applied this around both catalytic converters, and around the pipeing on both sides of my headers. It is a true duem exhaust. So one tube went a long ways. For almost a week after application I could smell this product a little. And finally I smell nothing. So far so good

I purchased this the other day however somehow it managed to get hard I didn't realize it until I opened it up and went to use it that the dang thing was already hardened up

I have the code P0420 for a long period of time. Checked the exhaust system and found a very tiny leak at the connected joint after the catalytic converter. Used this sealant to seal it and it worked great. No more leak coming out after using smoke check. The downstream oxygen sensor's voltage from very low voltage 0.055 (since extra oxygen/air entered the exhaust pipe from the tiny hole leak before the downstream oxygen sensor) to the normal range voltage from 0.60 to 0.68.