Bad oil leak using 1 qt. every 150 miles no excessive amount of oil seen in engine compartment for that amount of leakage. oil is around front of motor.

More than likely u have a leaking valve cover gasket unless your seeing smoke than it might have a burnt valve guide or guides if its smoking real bad than it could have bad rings and you don't want that cause then u half to tear the motor down basically rebuilding the motor

How many miles on your vehicle ? Do you see any leak spots on the ground from the truck ? Blue exhaust , oil burning , valve guide seals , piston rings , PCV clogged .

Oil Consumption Diagnosis
Checks
Causes
Excessive oil consumption, not due to leaks, is the use of 1 L (1 qt) or more of engine oil within 3 200 kilometers (2,000 miles).
Preliminary
The causes of excessive oil consumption may include the following conditions:
• External oil leaks
Refer to Oil Leak Diagnosis .
• Incorrect oil level or improper reading of the oil level indicator
With the vehicle on a level surface, run the engine for a few minutes, allow adequate drain down time, 2-3 minutes, and measure for the correct engine oil level.
• Improper oil viscosity
Refer to the vehicle owners manual and use the recommended SAE grade and viscosity for the prevailing temperatures.
• Continuous high speed driving and/or severe usage
• Crankcase ventilation system restrictions or malfunctioning components
Refer to Crankcase Ventilation System Inspection/Diagnosis .
• Worn valve guides and/or valve stems
• Worn or improperly installed valve stem oil seals
Refer to Spark Plug Inspection .
• Piston rings broken, worn, or not seated properly
Allow adequate time for the rings to seat.
Replace worn piston rings, as necessary.
Refer to Cylinder Leakage Test .
• Piston and rings improperly installed or not fitted to the cylinder bore
Refer to Lower Engine Noise, Regardless of Engine Speed

how many miles?
can be bad rings.
or bad valve seals.
or both.
do a compression test then a leak down test, and bingo the answer.
if both pass, the valve seals are bad.
if not rings are bad, if the oil test for compression fails the valves them selves are bad, if the teaspoon of oil test , passes the rings are shot.
read up on all compression tests. using google, or by any car engine book, one that tells you how to test for this.

The leak down test, can even tell you which direction the leak happens
using a rubber hose to your ear.
i can hear air leak to crankcase, valve cover oil filler, oil dip stick hole, and to intake plenum and even hear it at exhaust ports. sure can.

one the oil control rings on old engines can stick down and be
near useless. stuck in the lands. seen many like that.

Id use the 2 gauge to judge engine condition,
if bad, its hopeless. (bottom end bad)
if good, all tests. then the valve seals are bad.
there is a way to change them head on car.
using shop air , or other wild tricks.

All motors will use a small amount of oil over a period of time. It is used by boiling off in the sump from blow by around trhe rings and ring gaps, smoke vapour through the manifold system and general leaks around the engine or sump gasket. It is necessary to lubricate the rings as they are moving. However having said that consumption in excess of 1 liter pre 5000 miles would bear investigation as it will point to engine wear or leaking oil seals

It can easily burn that much in a 100 miles without seeing any smoke.
If you check the spark plugs you may find evidence.
It can also leak while the engine is running and not when it is off. Most Northstar engines leak to some degree.

Gasket/O-ring bad on the oil fill cap. The fan is throwing it around where you've found the excess.

the best way to find a oil leak is to get a better look go under the car and look at the oil pan for any signs of leakage open your hood and look around the valve covers and intake for leakage these are the normal places oil will leak from first. second i would watch the exhaust for white or blueish white smoke and third i would pull the plugs to see if there is oil being burned.

The main thing you will need to do is to minimise the amount of 'excessive' engine fumes being generated in your engine compartment which in turn will 'leak' into your car compartment: 1) Degrease your engine and check for leaking oil gaskets especially around the oil refill area: oil leaks at the back of the engine falling on your hot exhaust pipes and on your engine block will generate lots and lots of 'nasty' smelling fumes! 2) Check that your exhaust pipes joints are well sealed especially the one contained within the engine compartment: taking great precautions, check for the obvious leaks from smoke emitted but you could use soapy water to assist. 3) Check that the lining in your engine compartment are in good condition taking particular attention to the 'Firewall' ones (e.g. the one between the engine compartment and the passenger side compartment). 4) Check for broken heating/cooling air hoses leading into the passenger compartment.
Hope it helps!

1qt per 1000 miles isn't too bad, all things considered. There is probably some leakage through the piston seals, which is to be expected after 115,000 miles. I would give a good quality leak-fix in a can a try, as they can really help with some of the more minor leaks. If it is a piston ring or seal problem, its an expensive fix, but give a canned solution a go to see if it helps.

Another option that a mechanic friend of mine suggested for my old Grand Am was going from synthetic to conventional motor oil. Synthetics don't generate sludge or buildup, which is great, most of the time, but when mine started to leak oil and smoke on startup he suggested going back to conventional, as some of the buildup would actually help stop the minor leaks.

call a tire shop or the dealer for the exact tire size. The oil has to be going somewhere. If it's not leaking it's burning. check the plugs for oil, ck for mixture of anti freeze & oil mixing together, if it runs hot/ overheats it may be a head gasket. Or a crank or cam seal that's leaking only while driving. Have it checked, the system is supposed to be sealed.