SHELBY GT 350 Member
Joined: Jan 2011
Location: Central Massachusetts
I'm pretty sure in the real world these days, any "decent" oil will meet or exceed the manufacturer's specs, so I don't think it is a big deal. That said, they only charged 5 bucks for the oil, so that tells me it is cheap stuff, whatever it is. I think I would change it out for a good synthetic just to be safe, and next time you go for an oil change, provide the oil. Some shops will scowl a bit if you ask them to do that, I guess they are offended that their oil is not good enough or too expensive, but usually they will do it.
| 2010 GT coupe | Daily Driver with some Steeda and GT500 take-off stuff for the occasional track day