Just because oil "changes color" doesn't mean it lost it's lubricating properties. Honestly I just stick with whatever oil my budget can afford at that time, excluding any oil that costs more than $5/QT; I just stick w/ SuperTech oil filters. I take care of my engine but of course I have taken it to 9K+ RPMs plenty of times throughout it's life. Has never missed a beat yet ..

Quote Originally Posted by TIGERJC View Post
seems like a waste of oil to change it at that interval
Agreed.