I've put on Felpro, ZZP, crap brand from Advance and Rockauto. When I first found out I had every exhaust seal pop off.
I haven't pulled my covers in over a year but I'm assuming it's #4 in the back since that's the one that happened last time. it might be how my PCV was setup. I had it blocked on the Gen V and on the Tb on the back end. I have since fixed that but haven't changed the seal yet.
Mine still puffs every now and then. Probably burn a quart of oil in between changes. Not enough for me to care.
