I have a 95
Corolla 170k miles and a 00 Corolla 130k miles. Both started burning oil around 125k miles. What type of oil should I be using? I have been using 10w-30 or 5w-30 depending on the season, but my 95 is starting to go through a quart every 600 miles, instead of 1000-1500 like it used too. I have heard the 1.8 L DOHC motors are known for "bad" piston rings, something that I don't want to swap out. The 00 corolla was a quart low at the last oil change, so I am thinking it will have similar problems soon. Other thoughts or additives that might help would be appreciated.
S