OK so I have the dreaded 1zz-fe engine from Toyota in my 1998 Corolla. It seems to be standard internet knowledge that these motors have some issues with the piston rings gumming up and allowing some oil blow through, thus causing high oil consumption. Mine isn't as bad as the worst. I used about quarts every 1500 miles (roughly). That is a lot, I realize, but some guys use a quart every 100-150 miles. I am not going to tear this motor down and replace the piston rings. I am more or less going to "run it til she pukes". Until then, is there any kind of additive I can add to maybe help free up the rings or reduce consumption. I am already running high viscosity motor oil. I have read about the MMO and Kreen. I've already heard about dropping some kerosen or MMO in the cylinder and letting it sit a day or two then run it. What's everyone else's opinions??