overdrivex said:first off dumb s*** a flat surface is flat regardless if its 0 degree angle or a 10-20-30-100degree angle!!! its obviouse this guy wants to do this on his driveway not some fucken hillside!! this is an example of flat "_____" no matter how you spin it its still flat!!!! this is example of not flat "^^^" when u jack the car up the car is no longer at 0degree anyhow. the way stands tip over is when wieght is shifted improperly and if stands are not firm on the ground or not placed in the proper weight bearing possisiton!! if you never use jack stands b4 why risk you fucken life over a goddamn oil change?!?!?!?and 3.7 - 4quarts who gives a s*** when u put oil in ur car do you bust out the fucken measuring cup or something..OEM is "ORIGINAL EQUIPMENT MANUFACTURE" wheither its for p5 626 its oem as long as u get it from mazda..as far as sedament and debre thats what the oil filter is for. and as long as you chang your oil regularly it wont pose a problem. i have two cars one of which has 180K and almost 18year oldcar and has no engine problems what so ever.. u guys are worried about little tedious things that pose no real problems to the reliablility to the car.