Hey guys, I just purchased my first Mustang. I've always told my wife I was going to buy something with power when we paid our house off. Well, it's not paid off but last weekend on a whim, we both fell in love with my new daily driver. I bought it this way so here's what I know about it so far: 101K miles (not too bad for a '07 I guess) California Special edition GT convertible Roush supercharger Cervinis hood Hurst short shifter Corsa exhaust Pioneer touch screen head unit Shaker 10's mounted inside trunk Drilled and slotted brake rotors I was told by several different people (sales and service) that the previous owner was an older guy (hopefully he took care of it) who traded it in for a Roush. It's super clean. As close to new condition as I've ever seen a 7 y/o car. Now for the questions: Soon after I took this car home, it gave me a check engine light and a check charging system error. I took it back to the dealership and they replaced a hose and a O2 sensor. The tech intentionally avoided my questions about the charging system failure. As soon as I got home today the charging light came back on. From what I've read, it's most likely the altenator, a ground wire, or a bad battery. I plan to take it back to Ford tomorrow. Has anyone had experience with this? This car is sooo much fun to drive. At 2K it starts to open up. At 3K it roars. Every car on the road wants to race and it's so hard not to do it because I finally have a 400+ HP car. I'm trying to drive this car easy and keep my shifts around 2K, no more than 2500. What do you guys typically shift at? What's your gas mileage like? Do you use premium or regular? Why? I just bought this car so I have no idea what maintenance was done it. Of course the dealer will tell me it's had all recommended maintenance but what's the chance that this is true? Do you guys use regular oil or synthetic? Any special maintenance required for a supercharger? There are no special guages in this car so aside from taking it to someone I don't really know how to tell how much boost it's running. Maybe you guys know more about my set up than me from pics: This car will be my daily driver and I want to extend the life of the car as long as possible (at least until it's paid off). Thanks for any advice!