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Engine oil level after a service

alex yates said:
+1!!!!!!!

Also, I'd have something to say if I bought a pint and the glass was only half full.

So would I :thumb:

That said if the op took the car in with oil on the mid point they may have thought that was his preferred oil point and replace the oil to the same level as the was in the car when they received it hence giving him the extra pint in a bottle for use later if the level dropped.

Although it's more likely that they just spiller a bit when the work experience lad was changing the oil :dont know:
 
More like they're trying to make more money by putting less oil in. Local pug garage was famous for it. Technicians used to get rollocked if they even filled halfway - they were advised to just fill to minimum level!!!! :eek:
 
I still don't get why someone would deliberately halve the (manufacturer's defined) margin of error.

Perhaps a better course of action would be to have the car serviced by a garage that knows what it's doing :dont know:
 
Have to say this is why I hate using the official dealers. Even with other marques have never had a good experience. Yet the independent specialists I have used for my old mercs , smart cars etc have never disappointed. They come recommended, often have years more experience than the technician at the authorised dealer are , are much cheaper and do a better job. As the car is warranty I'm using the OPC but boy do I hate having to do so.
 
GT4 said:
I still don't get why someone would deliberately halve the (manufacturer's defined) margin of error.

:yes: Totally agree.

I don't think they 'get it' and truly believe middle is optimum with a high & low tolerance band, rather than an optimum level with only a low tolerance band (to cope with oil usage).
 
The only failure mode associated with the top of the level is caused by human error (and may be averted before you even crank the engine just by looking at the level guage, or alternatively get the job done by a professional)

Every other failure mode is protected (and to some degree pro rata to the distance from the bottom of the level) by being near the top.

If half full was better, then that would be the initial goal :?

In any case, you would have to be pretty ham-fisted to cause real damage, as the over-fill buffer is circa 125-200ml beyond the top segment.

The most common over fill is actually on the 996 and 997 (Mezger) Turbos due not performing the extra drains on the turbo reservoirs, and then filling as per the service guidelines which assume this has been done.

Forget it is a dry sump too and you overfill by about 6 litres! :eek:

The dry sumps can't be measured static from the cockpit either, as the Carrera can - so you have to start, run and hit op temp before accurate readings are available.
 
Mine came back from opc after first service the same. 2 bars on the electronic dipstick, so I'm guessing the standard volume reccomended by porsche for an oil change brings it to me level on a 991.
 
just my 2 pennys worth ..

The car has to be on a lvl surface and at full operating temp to check ..

It doesnt take much to over fill them , 0.3-0.4 ltr i think and you will get a warning message on the dash telling you .. each segment is approx as above so a single segment over filled will trigger a warning.

As oil expands when hot its important to have it at full temp to check , a mechanic could therefore try to finish the job quicker by leaveing it a little lower on the gauge and expect that at full temp it would be about right ..

Also and more likely he knows that if he goes slightly over the max it will end up comeing back with an over fill warning which will mean haveing to drain and refill , time consuming so he might leave it low to be safe ... 2 segemnets is not very much oil comepared to how much is actually in the engine , 1 segment down and i would have said its safe practise but 2 is a little too much.

There isnt a standard amount to put in btw .. you fill it untill its full .. you dont just chuck in a set amount as depending on how long it drains you have to put more or less oil in.

IMHO of course.
 
Just to add another anecdote to this I had my car serviced at an OPC (Portsmouth) the other month and the level was spot on at the top just as I expected. Anything other than that would have had me complaining to them (and probably not using them again as it shows a poor attention to detail)

As soon as it goes one segment down, I top up with about 250-300ml to bring it back (my car did about 1 litre of oil in about 12,500 miles (mainly motorway))

I have noticed that the dash gauge is extremely susceptible to the car not being perfectly level - i.e. it can show one segment down on a slight incline but be spot on once the car is dead level. It's a pain because my driveway isn't level but I've got into the habit of checking when I fill up.

Cheers
Mark

EDIT - Sorry mines a 997 and just noticed this is in the 991 board. Same still applies though I think, but updating this post for accuracy's sake.
 
997 always came back full on dipstick,991 came back at mid mark.
No way can the dealer check the dipstick as it take many miles of driving before it will read after a refill.
So they chick in the measured amount of oil and the dipstick level is where it is.
Neither of my 911's have used oil and both have had electric (pressure on demand) oil pumps, so I've never woried about it.
I was too busy driving and grinning to worry about any of it.
 

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