1) Is synthetic really necessary for my 07 3.7 I5 engine or is conventional sufficient for a non turbo/supercharged car?

2) Has anyone installed an aftermarket sunroof? Or should I just drop that idea and should have purchased one with the vehicle? haha

 

they say you dont need to at 3000 but i do!
now i really want to treat this h3 good so i figger its cheap ins to go with synth. EVEN tho i may trade up soon,,,to get the missing sunroof!!!(your 2nd question)!
i got a real dissappointment in the snow but i really like the style and feel of h3 so i am planning a 2010 to start fresh for what may be my last vehicle, hoping it will outlast me !!!
btw oil changes are a new experience!! diy

have fun
tom