Quote:
Originally Posted by chaoskaze
I actually don't know what changes the feel of oil so I know I'm not gonna be able to convince you that I can feel the oil getting old.
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It's not dirt. You're feeling the drop in viscosity/lubricity as the oil cooks and shears. Some of it is also the filter getting dirty. I've tried just changing the filter. Feels better for a while but not long enough to make it worth doing regularly.