Fill 'er up!  A phrase from a by-gone day or is it?  Motorists can still get full service at Polk Oil Company's South First Street location. It's a perk that the company feels ties it to its beginnings - as a garage in the small Cherokee County community of Wells. Customer service was the foundation of HC and Hazel Polk's garage when they opened it back in February 1937.  As their business and family grew, they moved to Angelina County and opened their second garage and service station at 1422 South First Street. That was in. . .