Geoff StiglerGeoff Stigler is Manager of Worldwide Marketing for John Deere Power Systems.From the AuthorEnginesFuture challenges with Tier 4 and Tier 5John Deere Power SystemsJohn Deere Power Systems Manager of Worldwide Marketing, Geoff Stigler, comments on the company's Tier 4 Final solution, predicts Tier 5 regulations, and discusses JDPS' solution to Tier 4 used equipment sales to lesser developed regions without ULSD.Page 1 of 1
