20B 3 Rotor

iTrader: (7)

Hey, I just brought back my baby from the states, and there were two things I noticed and I'm too sure if there is an issue or not. The first is that at stoplights, mostly when im behind cars, the rpm will drop in first to like .1 and start to shake, but thats only when i press the brake and hold the brake, the other thing is, im not sure if its related, but the oil pressure will fluctuate from 30 to 60, im going to be doing an oil change to see if it will help, but if you guys have any idea what it might be that would be great, ohh and what oil you would recommend. thanks.