Recent content by Dell20001

I am posting some data from my 2000 Jeep Grand Cherokee with the 4.0 Engine. Below are 3 samples and the supporting data. Sample #1 Mobil 1 10w30 Sample #2 Schaeffers Supreme 10w30 Blend Sample #3 Schaeffers Supreme 10w30 Blend No makeup oil on any of the 3 samples. Sample...