I used a melling tensioner on my 5.9 magnum. Had about 1,000 miles on it when I tore it apart for a cam swap. The chain dug into the guides and sent bits of plastic through the engine. The crank journals were fine but the soft bearings were pretty trashed. I'll get pics when I get home later.
I was wondering about that. A quality double roller shouldn't stretch too much especially how few miles we drive our cars. I put one in my 273 and wondered about it.
