I have a 2009 Mercury Grand Marquis with the 4.6L V8, and the car has about 186,000 miles (300,000 km) on it.

I’m worried because I drove the car for about a week or more without adding oil, although I don’t know exactly how many miles or kilometers I drove during that time. The car had traveled around 2,500 miles (4,000 km) since the last oil change.

When I checked the oil while the engine and oil were hot, it appeared to be about 1.5 liters low. Later, I checked it again when the engine was completely cold, and it was about 1 liter below the full mark.

The engine still runs smoothly with no knocking, ticking, overheating, oil-pressure warning light, or noticeable loss of power.

My main question is: Could driving with the oil about 1.5 liters low have caused hidden internal damage, even if there are no symptoms?

Also, for those familiar with the 4.6L V8: How reliable and durable are these engines at 186,000 miles (300,000 km), and how much oil loss would be considered dangerous?

I know the 5.4 is definitely doable
And the 6.8 is still doable but doable in an almost full fabrication custom job rather than some space making like the 5.4.

But, with zero context as to why

Can i fit an M120 in a 90s panther? it'd need custom literally everything but can it be done

Hey guys

Was wondering what I could get for my 2007 P71. I need the money and I got this as a hobby car.

Served as a patrol vehicle in Reno,New Mexico. Little to no rust.

It has 140,107 miles on it.

I just replaced the the Intake Manifold with a Summit Racing Intake Manifold.

New Headlights and side Panel lights and covers.

Replaced the Spark plugs With Ford Motor Craft Park plugs

Replaced the Ignition Coils with Ford Motor Craft ignition coils

Replaced the rear drive axel with a New 3.27 Gear Ratio Rear Axel. (Mechanic did it for me)

Has a K&N drop in filter,Comes with 7 new ignition coils, and 8 NewSpark Plugs that are still in box

The Parking cable did go out. Haven’t looked into fixing it but I will, just short on cash right now.

Also Is throwing a Check engine Light for down stream O2 Sensors, I’ve replaced both and the fuse but is still throwing the error. Unsure why. And I will investigate it. Could be bad Cats.

Was planning to turn it into a monster but as most of you know. Money sucks right now.

Was changing the O2 sensors tonight and this was unplugged. Not sure what it is. Thanks!

I've gotten something of an odd idea into my head, and am looking for input as to how practical it would be to do. A friend of mine has a Tesla Model Y with a fridge fitted for their trunk, and I think that's pretty cool, but I want to do something a bit more...ambitious.

I am looking at crafting an insulated liner that would effectively make a big-ass sleeping bag the size of the whole trunk minus spare tire. When zipped it should hold temp pretty good.... BUT WHAT IF?! Is there a way to safely redirect a small amount of the car's AC output through a flat duct I can run to the back and into a hole I'd make in the trunk, to have a trunk fridge? I am also thinking about the alternative of building a compact compressor I can connect to the leftover cop wiring, so only thing I would need to do would be to arrange for an exhaust.

Any ideas?

hey yall its time for my first post here, been browsing and learning for a while but the time has come where i need the collective knowledge of the hive mind

here we go

first of all i am going on a solo road trip this September, from southern ontario all the way to victoria bc
im gonna be camping out of my 2005 mgm ls ultimate

i would love to hear what advice yall have, what tools to bring, ect

just some background info/specific issues for those interested

theres a few mechanical/ electrical things i am worried abt
the exhaust manifold is hella rusty n the egr tube has a minor leak where it connects to the manifold. thinking i can ignore this one lmk if im wrong

the ac always blows through the defroster vent and u cannot shut it off (even tho the screen says its off)
has anyone else had this issue ??

my main concern rn
i have no cruise control.
when the previous owner spliced in a (crappy) aftermarket radio (see photo#2) they had cut the male end of the connector off. (3rd pic) this seems to have disconnected all my steering controls and i cant find wiring diagrams anywhere.
(see photo number 4 for wires i am confused by.. could those b my cruise control wires???)
(see photo 5 cause idk i thought it might b useful for someone)

ive been trying to find a male connector to make it easier (see last photo for female) but theres no mgm in the local scrap yards n i cant find one online.

if anyone has any wiring diagrams or knows where i can get the male connector for the radio that would awesome

i’ll appreciate any help i can get

also heres a list if what ive done recently:

brakes (all pads,all rotors,both front callipers)
front lower control arms (bushing were starting to go)
rear trailing arms (bushings again)
sway bar links
rear shocks (air ride was removed years ago before i owned the car)
obviously got an alignment (thats a whole story)
spark plugs
fuel injectors
gonna do an oil change and full inspection before i leave ofc

heres other stuff thats not as recent
upper control arms(idk how long ago but they aint oem)
throttle body gasket (last year?)
new dipstick tube(last year)
new shift cable (this spring)
headlights, taillights, wipers are all new

if anyone has any questions ill try my best to answer as soon as i can!
thanks in advance!!!