2011 GT Oil Change Woes
I feel like a bit of a fool, but hopefully someone on this forum can help me out. I brought my 2011 GT 'vert in for its first oil change and tire rotation at the dealer at around 8,000 miles (they had a coupon and I wanted all maintenance to be documented in case of any engine tick/transmission problems). They returned it to me after about an hour and a half, and I drove home, only to notice that the tires hadn't been rotated (there is an obvious scratch on one of the wheels that had not moved position), and I brought it back immediately, demanding the rotation and asking if they really even changed the oil. They rotated my tire and insisted the oil had been changed, I was a bit suspicious because the dipstick was still a bit dirty but I gave them the benefit of the doubt.
Fast forward about 3,000 miles and my oil life indicator is now at 0, so I decide to change the oil myself and do it right with Mobil 1 and a Royal Purple filter. There is no evidence of a previous oil change and the oil pan drain is extremely hard to remove. I'm no weakling (6'2" 200 lbs), and it took both hands and bracing myself against the curb to get enough torque on the wrench.
I saved the oil just in case there is a way to tell from how degraded it is if it had ever been changed, and was wondering if there is some sort of damage that might have happened to my car as a result of the oil staying in my new car for almost 12,000 miles.
I'm not an experienced gear-head by any means, but I have been saving my extra flight pay (Naval Aviator) for a few years to get this car, and really want to protect my investment. Any advice from the forum members would be a huge help. Thanks.
2011 GT Premium Convertible
Grabber Blue/Charcoal Black