RPM's bouncing at idle
 

at idle the rpms will bounce 50-100 rpms in either direction. this morning they were going so low that it sounded like it was going to die. What would cause this? It's only at idle. probably not fuel cause it's been happening for awhile and i've filled at different stations. Maybe filter? i'm due in 2k+ miles. It's getting annoying. I've heard IPR, IDM, any ideas????

Can try the fuel filter being it's the cheapest and with this crap fuel, be worth a shot.

Do you have a check engine light?

i'd try a new filter and throw in a bottle of injecor cleaner on ur next fill up