Originally Posted by oledoc2u

I will change mine every 4K...it makes me take a look at things each time I am under there, and stay on top of things....vescosity can break down for a number of reasons, sometimes from just setting a warehouse too long... not going to risk a hand built AMG motor with short changing its life blood, just like I wouldn't short change my big truck...we learn a lot having driving trucks for over 3 million miles, and police cars for over a million as well. No one treats an engine any harder than those 2 professions. Oil is the number 1 factor in engine failures....by oil analysis, a high copper reading could head off spinning a rod bearing ruining a crank, thus the engine...don't take your oil for granted...I like racing mine, so I keep a closer eye on it, but nothing wrong with being safe....FSS on mine is for looks...don't even use it...