When the auto-partplace.com team decided to choose an car parts vendor, we decided to provide only the best...
Tread is in need of maintenance when: There are wear bars unevenly on the tire; if there are wear bars exclusively on the outsides OR insides of the tires (can be something as simple as improperly or unevenly balanced tires, or something more complex as the front end needing an alignment).
As far as most people know, motor oil is motor oil. But, this isn't necessarily so. Just as different brands of gasoline have different chemical blends, "additive packages" in oil varies among manufacturers. One petroleum engineer told us that the average motorist can cut to the chase simply by picking one brand of oil and sticking with it.
