can a non driven 7 with no omp lines but premix ruin the apex seals?
 

i heard that the premix oil can separate from the gas over time therefore running my motor without lubrication! is it true? i thought of it today after driving it so i decided to squirt some premix into the spark plug holes.

As long as you're using a TC-W3 premix, you should be fine. And it takes a LONG time for it to seperate from the fuel. I would look for other signs of seal failure first. Premix is better for the engine than the MOP system to begin with.