Tymbrymi,
I will pick up a couple of cans this Diesel Purge this weekend and see if that helps.
I assume the idea is to run the engine on straight "diesel purge" until all of it is used up and then reconnect the hoses back to the stock fuel system? I assume it will take a while to burn up 2 cans of this stuff.
One question still lingers though....if the miss at low RPM were caused by a dirty injector(s), why does it run fine on a thicker oil but runs worse on a thinner oil? Wouldn't a thinner fuel spray better from the injector? Also, this problem only occurs when the engine warms up. When the engine is cold, it idles fine.