we bought our 04 2.3l new. has 90k on her now....have yet to have a single engine related issue.
04 ZTS: 2.3L, 5spd, cfm 67mm tb, fswerks cai, svt suspension & black headlights, magnaflow catback
03 Ford Expedition: 5.4L, supercharged, 379 RWHP, 465 RWTQ (Sold 11/12)
09 Flex Limited: 3.5 n/a, k&n cai, aem brute force filter, magnaflow catback