Burning oil...what oil to use in 1998 olds aurora 140K miles

Have you checked the oil,checked to see if dipstick and fuel cap are tight.Do you have oil spots on driveway? Those are the first things I would check,if oil is on driveway is it coming from the oil pan.It 'seems" it May be tied in with the oil change from 2 weeks ago

go to page 316. http://www.manualowl.com/am/Oldsmobile/1998-Aurora/Manual/984

Use 20-50 multigrade synthetic oil.

There isn't a whole lot that can be done for an engine that consumes oil, except to rebuild it. But, that would be more expensive than the $600 flush job that did nothing.

Perhaps, the sea foam wasn't the best idea, in my experience.

Maybe try high mileage oil when changing the oil that burns off less than regular oil.

Beyond that, I would consider getting another used engine or rebuilding this one if you plan on keeping the vehicle.

sounds like crank sen or ing module under coils most likly module

There are common places, you'll just have to look around to see where the leak is:
Around the oil filter and the housing
Around the oil pan and the pan gasket
The oil seal behind the damper pulley
Valve cover gaskets
These are the most common places, leaks can spring up anywhere.

All engines need periodic tuneup. At the least is spark plugs, fuel and air filters, and O2 sensor(s). Any timing belt driven overhead cam engine should have the timing belt replaced every 50 to 60K miles. If it fails while running, nasty things happen to valves and pistons--this problem varies by manufacturer and engine design. You should change the oil filter along with every oil change.

it's the oilpan gasket. it's a northstar motor. the caddys with the northstar do it to. mine does it as well. just go to autozone and get some leak stop :) within a thousand miles you'll be nice and dry. it's just a problem the motors had for a few years

internet is best place to get one. try ebay.... i had trouble finding one searched every auto store for miles. but i got one online. it covers all general info and much more. here is the link @ ebay. a little expensive but worth it... http://cgi.ebay.com/ebaymotors/1995-Oldsmobile-Aurora-Buick-Riviera-Service-Manual_W0QQcmdZViewItemQQ_trkparmsZ72Q3a1205Q7c66Q3a2Q7c65Q3a12Q7c39Q3a1Q7c240Q3a1318Q7c301Q3a0Q7c293Q3a1Q7c294Q3a50QQ_trksidZp3286Q2ec0Q2em14QQhashZitem390014886218QQitemZ390014886218QQptZMotorsQ5fManualsQ5fLiterature

Yep it's more than likely worn valve stem seals. What happens when your motor cools down the seals contract and oil passes through the gap and then when you start it again the oil burns. It will more than likely last years depending on how much oil your burning if you need to put more than 500ml in a week you probably should get a mechanic to check it out.