yeah, it made a big difference.
I put some G2P in the tank and have been running it through the system. I can still smell a faint odor coming from the exhaust, but I think it is the G2P. At least I hope it is. The truck seems to run better every day, the power is really coming back. I have taken it on the freeway numerous times, and havent had any problem getting it up to 65 mph. It would probably go faster, but I aint pushing it.
I still get a little (very little) gray smoke from the exhaust at cold startup, but only if I race the engine up. The brownish fluid I had talked about coming from the exhaust before is gone though.
I have been doing some reading on the seafoam, and am wondering if I should do this treatment as well.....