When we got underneath to find the root of the problem, it was obvious. Somebody had tightened this flimsy filter with a wrench, and in the process had crimped and punctured the housing. We'd say that switch to thin steel was very poor economy, even if it enables the company to blow filters out of K-Mart et al at two bucks apiece. It was a question of value over price. We also know techs who do this routinely on their own cars.
Oil is cheap, after all.
They do the deed faithfully every 3,000 miles, though, and trust that the filter was designed to live for the 7,500 and up oil change intervals the carmakers recommend. We just can't see it from a policy point of view for the professional repair shop. It's just too risky. I think it's a bad idea. The technical reason for this is that filters pick up water, and water is bad for filters.