Runny oil clogs the tube leading to the MAP sensor, causing a Code 13.
I have to pull the tube with the engine running to suck the oil back into the manifold, then shut off the engine, blow the oil out of the tube and maybe clean it with solvent. Every few tankfuls I have to do this.
The vehicle does not have any oil smoke while running. However, the next day after a freeway run, there will be a huge amount of oil it burns off for a minute, then it runs clean.
What's going on? Is there an explanation for the oil accumulation?