Part of the reason I stopped taking my daily driver to instant lube places was the incessant desire to sell me s**t I knew the car didn't need. I've also had problems with their inability to properly remove and re-install large plastic tray underneath the engine bay (Infiniti G35x & Infiniti FX35). Since then I've done all my own changes using good
oil filters (Bosch) and full
synthetic lube. I expect to do the same with the Cobra when it gets here, though I haven't yet figured out which filters I'm going to use.