Tried to cure hemi tick with seafoam. No luck.
I was a little skeptical trying this out. I put seafoam in the crankcase of my 08 Hemi. I put 250 miles on it this weekend and it didn't do a single thing for this Hemi tick. Actually it seems like it got louder. Usually mechanic in the a can does not work. It was worth a shot but i'm convinced it is a design flaw within the engine. I really like this jeep but I am so tired of it sounding like an old truck with a huge exhaust leak. BTW I did have the Jeep dealer check the noise out, no exhaust leak found. They said it was a normal sound.
I use to get 21 mpg on the highway and for some reason this weekend I only averaged around 16.5mpg. The mds would hardly turn on. I think the seafoam has affected that. Time to drain the oil, put fresh stuff in, and get an exhaust to drown out the tick.