Fort Washington, Pa.-based lubricants mega-marketer PetroChoice, now with locations in 32 states,acquired Indianapolis-based Miller Industrial Fluids LLC, which distributes and blends metalworking products, specialty lubricants and rust preventatives. Ashland will increase the price of maleic anhydride sold in North America by 4 cents per pound effective Feb. 13, which is in addition to a 4 cents/lb increase that took effect Jan. 1, citing increases in key raw material costs. Manufacturers react maleic anhydride with polyisobutylene to make polyisobutylene succinic anhydride, a chemical intermediate that adds functionalities such as dispersion to hydrocarbon products in applications such as lubricant additives.