Spark plug quality

[Dead Parrot]

2nd what Shifty One said. Lots of allegations of wrong doing by First Brands C-suite folks. Very possible that to keep the gravy train rolling, substandard(cheaper) ingredients were used in various First Brands factories. Autolite is a First Brands company. Last I read a few weeks ago, the bankruptcy plan for First Brands included shutting down the Autolite division.

Probably best at this point to pick a different supplier.