One of our trucking customers was a little leery about switching over from the Texaco Ursa oils to MAG 1 CJ-4 15/40. After we explained the quality of the oil, he made the switch. After several oil changes he said he didn't have any problems and that his vehicles ran just as good as they did on the Texaco.
He just told us [due to time constraints] he took one truck to a local lube center where they used Shell Rotella T 15/40. Shortly thereafter he noticed that it started using oil which it had never done before.
So any questions he had about the quality of the MAG 1 oil have now been answered:
Angel M. Cole
General Manager
Circle Oil Company