Hey guys, I bought my 99 STS a month and a half ago, and today i checked the oil level on the car because today it stalled twice in traffic, and i checked it for the hell of it, the car's never dont that since i bought it. The level was at the halfway mark on the dipstick while still hot. My question is should i add oil to it, or should i wait until its time for an oil change? The oil monitor says the life is at 65%, will this oil level be ok until its time for a change? I also checked for codes the second time it stalled, and there were two, AMPu1064 and PCM1599, both history. Any help is appreciated.