Castrol North America announced today that a New Jersey federal court has ordered an immediate halt to Pennzoil Quaker State Co.’s current advertising campaign for Pennzoil multi-grade motor oil.

Competitor Castrol North America, based in Wayne, N.J., filed the lawsuit that prompted the New Jersey judge's ruling. The ads, featured on television and Pennzoil's Web site, claim that Pennzoil ...

When you think about what is out there, he said, every other brand of any significance is already part of a larger company, such as BP's ownership of Castrol. The analyst views Pennzoil-Quaker ...