So I helped my friend pick out a Honda after many bad experiences with American cars, and I found him a 94 Accord with 160K on it. I did all the maintenance that had been neglected, especially the timing belt and water pump, and then changed the oil. I told him very clearly to check his oil at least once a week since we didn't know anything about the car and it could possibly be a burner. Well lo and behold he calls me tonight and tells me his "add oil light" (WHAT A GODDAMN IDIOT) came on. <--- Sorry I have almost no tolerance for people that can't keep fucking oil in their car. Anyway, my question is, its been about a month and it was already over 2 quarts low. Could an engine use that much oil internally past the valves without it being noticeable from the exhaust? And the real impending question, if the engine was fine before this, could it be shot now? Well, not shot, but could enough damage be done by the time it is 2-3 quarts low that the engine will be a burner forever? I'm under the impression that he immediately parked the car and added some. I used full synthetic Mobil 1 5W-30 fir what it's worth, I don't know if synthetic is able to better protect the engine in starvation conditions. Anyone know if the oil pressure light coming on is a sure sign that your valve seals are history?