First time I wasn't behind mechanic checking his work he putted 4.5 liters of oil into 4.3 liter sump and it's now on max. Can this harm the engine and should I remove some oil?

If your indicator shows it is exactly on max it should be fine. My thoughts of course, the techmiester will have the right answer for you soon enough.

If your indicator shows it is exactly on max it should be fine. My thoughts of course, the techmiester will have the right answer for you soon enough.

Couldnt have put it better myself

Thanks for your answers i'll sleep better now

is it on max when the engine is hot or cold ?

If the filter was changed that'll hold a bit too.

It's on max when cold.

On max is fine.

Every time I have collected my car after a service, the oil level is 3mm or so ABOVE the max. Been assured this is fine too.

a little bit of extra oil wont hurt too much! but overfilling can damage the catalytic convertor so try to avoid it if possible.

At 80 odd quid an hour is it too much to expect the oil to be on the correct mark? Maybe I'm too picky:rolleyes:

My mine dealer overfilled with oil too on my first service, it was WAY above max. For a while oil was forcing itself out of the filler cap!

Mopped it up each time, and after about a month it was on max, no probs since, so i think there's a bit of leeway there. Hope so anyway!

ideally the oil level should only be on max when the engine is up to operating temperature , any excess could possibly cause leaks or excessive engine breathing into the intake side of the engine , and more oil in the intercooler can't be a good thing can it

ideally the oil level should only be on max when the engine is up to operating temperature , any excess could possibly cause leaks or excessive engine breathing into the intake side of the engine , and more oil in the intercooler can't be a good thing can it

Err, I see it the other way around, the oil level should be on max on a cold engine that has had time for the oil to drain back into the sump.

Err, I see it the other way around, the oil level should be on max on a cold engine that has had time for the oil to drain back into the sump.

yeah i understand where you're coming from but that would mean once the oil had warmed up there would be too much oil in the engine , but to go back to the original point that was , mechanic overfilled the engine , therefore it was above the max which is not a good thing especially if its way above the max , better to be on max when at operating temperature and about middle when cold IMHO

yeah i understand where you're coming from but that would mean once the oil had warmed up there would be too much oil in the engine , but to go back to the original point that was , mechanic overfilled the engine , therefore it was above the max which is not a good thing especially if its way above the max , better to be on max when at operating temperature and about middle when cold IMHO

Ok, but does oil really expand that much when heated?

Ok, but does oil really expand that much when heated?

ok, i'm in danger of quting sombody else here....... here goes...... "pfffft"

if you can make oil expand at less than about 500 celcius you are a pure genius and should be working for esso or somthing.... and besides it would evapotate as a lower temperature than that anyway!!

so what your saying TeflonTom is that oil does not expand when heated , you may be right , but that just goes against all oil changes and level checks i've done in nearly 19 years in the motor trade , i thought what oil companies do with the oil is to try and keep its viscocity the same under extreme temperatures and pressures and surely everything that gets hot expands to some degree

so what your saying TeflonTom is that oil does not[/b'] expand when heated , you may be right , but that just goes against all oil changes and level checks i've done in nearly 19 years in the motor trade , i thought what oil companies do with the oil is to try and keep its viscocity the same under extreme temperatures and pressures and surely everything that gets hot expands to some degree

I always thought that liquids behaved in the opposite way to most other other substances, i.e it expands when it gets colder not hotter. (I know water does, not sure about oil though)

For the tiny amounts we're talking about here, I wouldn't worry too much, as the sump and pipes will expand as well, meaning that there's a corresponding increase in capacity for the increased oil volume.

I always thought that liquids behaved in the opposite way to most other other substances, i.e it expands when it gets colder not hotter. (I know water does, not sure about oil though)

water is pretty unusual for doing that. As stated, most liquids don't expand a great deal until they boil, you might notice water rise in the expansion tank when a car gets hot, but this is due to the water being near boiling point. I would suggest checking it when cold the day after the oil change so the oil filter has had chance to fill up and the new oil has got around everywhere it's supposed to.