I gotta tell all you guys what a help this thread has been to me. My 02 EP3 has had a lifelong (132k) diet of Mobile1 5-W20 per the owners manual and lately I have been using their Extended Life varity, changing it every 5000 mi. I have an oil change scheduled this weekend and this time I bought 5-W30 based on this thread. Just a couple of weeks ago I did a solo (just me & my EP3) NM to MA to NC and back to NM loop of the country and put well over 6000 highway mi on it in a continuous trip. I burned 1 quart of oil, put in about 500 mi from home on the return. Not sure if it burned the whole quart, the front seal weeps a bit but doesn't leave a drop in my drive yet. I am making the tool to hold the front serpentine sprocket so I can replace the front seal.
Just wanted to say thanks for all the good info in this thread.

AceEngineer