Jeep 2005 Hemi 5.7 stalled on the highway Oil 3 quarts low. I added oil and was only 3000 miles from last oil change. I added oil and got it home. Had it coded and came up crank shift sensor and had a new one installed oil change and filter change and correct oil put in. Now 1 week later its 3 quarts low again...any suggestions HELP

we check oil every other fuel fill up. on old cars, every fill up
did you run car 10,000 miles to a oil change? unstated.
1qt/3000 miles is perfectly OK.
so 10000 mles is 3.3 quarts burned and off the top of the dip stick
if you drive fast, it burns more, got a heavy foot, or load in back>?
if you had done it right, you'd have already learned YOUR engines
consumption rates, and learned to check when IT , needs checking
we do this on all engines. all machines.
all engines burn oil, the exception , a church car, new, and never driven, far, or fast or for 10000 miles to an oil change.

your mech, was right, he was thinking , you dont check oil?

I recommend you stay with the 10w40. It' more important that you keep diligent and change the oil at 3,000 miles or 3 months!

replace the valve stem seals

oil cap , that is moisture, all cars do that driven short distances.
due to never reaching full temperature to drive out that moisture.
(or the PCV valve is clogged, ) there if which causes stalls.
its a stall plain and simplle.
engine that stall, go to to zero RPM
engines that stall , most warning lamps turn tune on ,just like it does key on first thing in the morning. its called lamp self test
and is covered in the operators, guide, its ok this must be your first stall ever.
Get a new PCV, and get fresh oil into the engine yours is too old.
Also get a full tuneup, ever do one this DECADE?
stalls have over 50 caused,do you want my wall of text on that
bet not,,, but is true,

Get the car fixed, serviced, or a full tuneup,
spark parts, filters, oil, like what we all do.. to keep it running like new,. and last longer.
the PCV valve is also a standard tune up part, if found to be
1; clogged, 2, not rattling when shook. (its just a check valve)
also that valve clogged can cause oil leaks due to excessive
crankcase pressures. (due to the vent now running backwards an clogging them)


here are some causes of stalls.
ask us blind folks why your car stalls is really impossible.
but seem everyone does, endlessly.

stalls are cause by gross MISFIRE.
(or loss of 12vdc battery power, but that is not your case)

here they are, and the wall of text page is there for fun.
good luck finding it , texting here, endlessly....
http://jeepdied.com/Misfire101.html

What weight of oil are you using?
In cold temps it must be 5-20 or 5-30. Some newer oils are actually 0-20
Do not use thicker oils. They will not circulate in cold temps. And the oil pump will cavitatate. Meaning no oil circulation.
This is serious. An engine will last only 5-8 seconds with out oil pressure. 6-8 seconds not minutes. Engines must use much thinner oil in cold temperatures. Merely adding a quart of thinner oil to a crankcase of thicker oil... will ... not... help
If you can't change it yourself. Wait... wait... yes you can.... you can do this.

Unfortunately, the damage is done--the crankshaft bearing(s) have probably been ruined for lack of oil along with the pistons, rings, camshaft, valves, and so on. A major, major repair. Even if you fix the obvious noises, the rest of the engine will continue to haunt you. Cheapest repair is to find a replacement engine at a wrecking yard--they give a short guarantee for such parts which is long enough to reveal such things as oil burning and noises like you have now. A re-manufactured engine is the best of all choices, but quite expensive--probably over $3000. Hope this helps!

Slide a large piece of cardboard under the truck after driving for ten minutes note in which area directly above the spot on the cardboard the oil is coming from then get under the vehicle with a drop light to look for the origin of the leak, if no leak is detected then it may be the engine is burning oil this could either be valve stem seals or broke or worn oil rings.

i say change your oil every 3000 to 3500 miles no matter what any little monitoring system says!!!!!!
oil is the lifeblood of the car and is the key to a great, long lasting vehicle.

Nowdays 1 Qt. in 3000 miles, really isn't that bad, even some new vehicles claim that's normal. I know with my current vehicles, both at approx. 150,000-160,000 miles, they won't use any for first while after an oil change, but then after mileage starts adding up again, they start to use a little, approx.I Qt, every 1000 miles or so, until it's changed again. I've switched to the high mileage oil, just for piece of mind, as they say it revives seals, and has added protection for the higher mileage engines.This time around I'm thinking of adding "Lucas" & see how it works, as I've heard some pretty good reports on it, just to see if it will prolong that oil breakdown, at mid change.

I had same problem....valve seals were bad....dealer fixed free...warranteed 7 years or 70,000 miles...good luck!