[tturedraider]

One other little tidbit about oil changes and oil life. More than 20 years ago Consumer Reports did a huge study of traditional dino oil in NYC taxi cabs. They wanted to see if 3,000 mile oil changes were truly necessary. Half of the cabs got 3,000 mile oil changes and the other half got 6,000 mile changes. They tore down the motors before the test began and took detailed measurements. I can’t remember how many miles they drove the cabs, but it was substantial. After the test they tore down the motors again and took measurements. They found no measurable difference in wear between the cars that got 3,000 mile changes and those that got 6,000 mile changes.