What about spark plugs?
Mobil1 5W-50 is THE BEST in my opinion, very very good motor oil. 10,000Kms for an oil change is a bit too high, 4-5,000Kms is the max one should replace the engine oil and filter no matter what the brand is. But that's just me, it varies from person to person.
Wait a minute, what is the tire profile you're currently running? The module inside the EPS system needs to be replaced but I seriously doubt this is the case.
Jerks as in, while shifting through gears (P-R-N-D-S-B)? The car shuts off as well? Are you running a CNG kit?