All I can say about this is that it is not affecting the performance of my truck because I just smoked a Dodge Hemi today! One thing I did notice when I reved my engine is @ about 1k RPM I get a rattle noise coming from the engine. Not too load but you can hear it. I'll be adding some fuel additive today w/my fill up and will be draining out 1 quart of oil and adding 1/2 quart back in & see what happens. I'll post if anything changed.
