I have seen this in Ford's TSBs and on Motorcraft.com -- Ford now recommends the 5W-20 oil that meets WSS-M2C153-H spec on many of the older cars. Even my sister's 1994 Mercury Tracer is on the list. I have two family vehicles that fall under the new directive: a 1994 Tracer and a 1998 Escort. The Tracer (1.9l SOHC, auto) has over 200k miles on it, so I am sticking with 5W-30 and 10W-30. The Escort, however, is a baby with only 62K miles. I am starting to think that maybe using 5W-20 in winter would not be such a bad idea. It is very cheap and seems to have impressive specs and UOAs. Does anyone have an opinion on this? Should I just stick with the originally recommended 5W-30? The Escort is driven extremely gently. 70/30% city/highway. It has the SOHC 2.0l SFI engine and automatic tranny.