Pennzoil-Quaker State Company, a subsidiary of Shell USA Inc., has purchased TFH Reliability Group, the parent company of maintenance products and services provider Allied Reliability, from Capstreet.

Based in Houston, Texas, Allied Reliability is a holistic asset health and reliability services company. The company’s services include condition monitoring, diagnostics, lubrication systems and services, electrical services, consulting and training and aftermarket products and services.

“…Allied Reliability brings innovative and sustainable solutions to its customers that improve the reliability and productivity of their assets,” says Adrian Guerra, partner at Capstreet. “The sale to Shell is a good outcome for all parties, and we believe the company will continue to thrive under its new owners.”

Willkie Farr & Gallagher served as legal counsel and BlackArch Partners was the financial advisor for Capstreet. King & Spalding served as legal counsel for Shell.