Hi, my truck does something I've not seen before. At about 1000 miles before my truck is telling me to change the oil, it starts (consistently) throwing a P0301. It keeps this up until I change the oil. After changing the oil, and clearing the code, it's good until my next oil change is coming due. What's interesting, is you can tell the truck is really misfiring at idle. That behavior also clears up after the oil change. Should I just be changing my oil more often, or is the an indication of something else? BTW, it's always cylinder 1. Truck is a 2008 Ram 1500 SXT - 4.7. I use 87 octane fuel. Truck has just over 100,000 miles.

Thanks and Happy Thanksgiving.

 

Take a look at the plug in your #1 cylinder. The plug will usually tell you the problem. It may be fouled with oil.
Are you getting oil running down the engine, or oil puddles under the truck?

 

Thanks, I'll do that. What would I be looking for on the plug?

No drips on my driveway, though there always seems to be a little oil on the underside of the motor.

 

Generally the plug will give you indication of the cause of the misfire. You will often know right away by looking at the plug what the problem is. Look up spark plug analysis to give you an idea of what you are looking for.
I've seen many misfires caused by cracked spark plug seals. Oil will seep onto the spark plug and work its way down the threads and onto the electrodes. Very common and somewhat easy to fix.
But your situation may be different. You could be rich or lean, either will give you an incomplete combustion and the P0301 light. It could also be a worn or damaged plug.