Thanks, Glenn! you are the man!
Apache, just so you know, I wasn't necessarily asking you to look at switching oils ( IE: buying mine) ..my point about specialty lubes was this:
the mobil ones, the castrols, and the quaker states are not only similar in formulation to each other, ( so you can buy them anywhere), they are similar in functionality..
look at them like elmers glue - if you just want to bond two pieces of construction paper to make something to hang on the fridge, then the elmers is great.. but, ( getting back to the need for specialty lubes ) if you want to bond two things together so that you can put pressure on and get production out of the bonded parts, then you might need to step up to epoxy. they're both adhesives, but they produce dramatically different outcomes.
I'm not saying everyone needs a specialty motor oil..I'm just pointing out that there are different needs out there, and the cheap stuff can't meet everyone's needs. Some people just want an oil to go 3,000 miles, and their only criteria is that nothing's blown up.. for them, whatever is on sale that day is fine.
The sad part is when marketing hype convinces people they're buying something that they aren't getting.. and that's the only reason I make the distinction between common and specialty oils.
and you're right, a higher cost doesn't automatically mean better quality.. some of the "high performance" specialty oils out there are nothing more than the same stuff you can buy at wal mart, in a different bottle.
I should have made the point earlier - the key to an oils quality isn't brand name, where you buy it, or what it says on the bottle.. the key is what an oil analysis says the oil is doing in the unit..
in thinking about your oil consumption issue.. take a look at the PCV valve.. if it's gummy, what you may have going on is the solvents are boiling out of your oil and "outgassing".. if your oil has lots of solvents and reactive hydrocarbons in it, this can reduce your oil level and make it seem like a mechanical problem...just something to check - I'm thinking out loud, as always.