The ABC7 I-Team uncovers the disputes under the hood. How to make sure you're not getting a bad oil change, Thursday at 10 p.m.CHICAGO (WLS) -- Routine maintenance turns into a repair nightmare. Cars are left unusable.Jason Knowles and the ABC7 I-Team uncover the disputes under the hood.How to make sure you're not getting a bad oil change, Thursday at 10 p.m. Report a correction or typo