Just got back from a 150 mile drive. When I checked, oil indicated "overfill".
The car is level in my garage. I do not believe it is overfilled.
It checked out fine after its oil change in January and no oil has been added since.
I think I read somewhere on this forum that there is an alternate way to determine oil level but I do not recall.
I would appreciate it somebody would give me a heads up.

 

Did you wait more than 10 minutes after shutting the engine off?
if the level was correct on a previous check and you have added no oil, then it really is not possible for it to be over-filled.
Check again with a cold engine, before you start it,

 

Sorry, I must disagree with the emboldened statement.
It is very much possible due to fuel dilution of the oil.
Put simply, unburned fuel getting into the sump via, for example, piston ring blow by or faulty EGR or faulty EVAP or faulty DPF.
Particularly in diesel engined cars with a DPF, not so much in petrol engined cars, but I wonder what the new generation of OPF equipped cars will bring?
Also I seem to remember reading somewhere, possibly on this forum, of cases where faulty "stuck open" injector(s) on a petrol engine have caused fuel dilution of the oil.

 

It was just a false reading as expected.
No overfill. No fuel in oil. No panic!!
The first reading was taken about 30 minutes after the engine stopped and read high.
I started the engine again for about 30 seconds, then waited another 20-30 minutes - reading was normal.
Car was stationary the whole time and level.
I would still be interested to get the technique for doing an instant reading vs average reading, if anyone can help.
They do say if it walks like a duck and quacks like a duck ... it is a Jag false reading

 

Glad all is well now, instant reading process is ( I am sure works on other jag models ) open hood open drivers door , press start button but don't start car , then scroll to oil level feature, should give you instant reading . You can also Reset oil sensor but can't remember how to just now , will come back if I can remember lol

 

Thanks George.
I will try it today.

 

I had fuel in the oil after a stuck injector. Annoyingly, just had an (expensive) oil change, and had to do it gain!

 

George forgot: after selecting the oil level, hit cruise control cancel twice…
https://www.dropbox.com/s/ncfhyazedn...ng%29.pdf?dl=0

 

Thanks DJS

 

Hi Malcolm: Presumably you had symptoms other than a high oil level reading when the injector stuck??

 

Thanks buddy

 

https://www.jaguarforums.com/forum/f...2/#post2427295

 

Mine has read overfilled twice as recently as today. It read ok twice after it's last service in November.

 

When I got bac k yesterday from a non-stop 150 mile drive the oil level read "overfill".
I read the level approx. an hour after stopping the engine.
I restarted the engine for approx. 2 minutes, then waited the specified 10 minutes or so until I could first get a reading.
Level read "normal"
Baffled!!.

 

The best time to take the reading is when the engine is cold - after an overnight cool-down. Readings taken on a cold engine will be consistent because the oil (all that will drain) will have found its way back to the sump.
readings taken on a hot or warm engine may not be consistent…and these engines can stay hot for a long time after shut down.

 

The 'thin' oil used by our Jags seems to expand, as an effect of heat. That is why there are very specific conditions under which we are supposed to check oil level.

So, I would posit:

The hot engine and oil after your 150-mile drive was the reason for the OVERFILL reading. More of it drained into the pan after that time, but it was still a bit warm.

The 2-minute run trapped more oil in the engine (didn't have time to drain down).

Several discussions here about how to reset the AVERAGE oil reading, below.

https://tinyurl.com/mr47zzzz

Read the oil the 'instant' way as in the Dynamic VS Static post a few lines down.
+++++++++

Anyway, that is why I check my oil after a change, then compare the reading to a cold start condition (which is when I normally check)

 

I only check mine when warm (which I rarely remember to do), because that’s the way it’s checked when I change it myself, following Jag’s procedure. If I check it when it’s cold, it’s a bit low because of that (don’t remember by how much), but it’s a noticeable difference.