abs/brake light

I recently changed the oil on an old lawnmower nine times to remove the dark sludge and deposits within the engine. I have a 1997 Accord, and if the oil is dirty when I check it, should I change it repeatedly until it is clear? I haven't drained the oil yet, so as of now this is hypothetical. Thank you.

I just had my "Service Engine Soon" light come on, so I took it to AutoZone to have the code read. Apparently, it has something to do with the mass air flow sensor, and while I can get that replaced, I do have a question. As I was leaving AutoZone, the A/C fan wasn't putting out near as forceful air as it normally does, and my car ended up dieing. I restarted it, and it died again. The next time, I drive with both feet so I always had the gas pressed down, and it stayed running. I did this since I only had a few blocks to get home......Anyway, is it possible that the mass air flow sensor had anything to do with this? I think the code also said it could have something to do with the throttle body. The print-out is in my car, but any knowledge is appreciated. The car is a 1997 Pontiac Grand Prix GT, 4 dr, 3.8L, V6 Thanks