Hey everyone, so im going to buy some requirements for my car to pass inspection, and i know i need 10w-30 motor oil. But im not sure if i should get full synthetic, or a non synthetic. i know the difference, but i want the best oil i can find that will give her that "umph", you know? I heard different engine oil's can give alittle more power, but im fully aware of if this is true. And also i would like to know whats a good brand of transmission oil, as im a bit ignorant in that part. mine is an automatic w/ overdrive( im guessing that is the manual option it has). And one last thing, can anybody find a diagram of how to take all the door panels off? The two speakers in the back are not working and i want to change them, or see whats wrong with them. I basically want to get all 4 door speakers changed out though.