2.0 Cdti oil and filter advice...

[DazSH]

Hi all I've been doing lots of service items on my new siggy for winter and due to its previous owner badly treating her..

I asked briefly about oil in someone else's forum post but thought making my own will help me pick best route at best cost.

My siggy currently has way to much oil in as I'm hoping this was to remove the service light which is actually on for glow plugs not oil and not to hide anything to do with oil pickup seal.. ( have receipt for this being don't late 2019 so hopefully just an idiot) ..

What 5w30 should I use someone posted a dexos 2 oil for VW https://www.ebay.co.uk/itm/392355124919 on a previous post cost is a factor but quality is also important I want the best balance .. thx in advance

[lizzard-t]

For a start I would be taking some of that oil out !
if it's above maximum then it needs reducing toot sweet .
if too high and it gets up past the breather system then it could cause engine runaway .
also check for a smell of diesel on the dipstick
if so it's a sure sign of failed regens .
as in your other post this stuff
it marked up as Genuine Saab ,but as you know Saab is no longer and basically there engines were GM power plants.
but I use that in the link .
but at the end of the day you pays your money and takes your chances.

https://www.neobrothers.co.uk/car-parts/engine/lubrication-system/engine-oil/genuine-saab-5l-engine-oil-5w-30-dexos2-32019299

10-4( rubber gloves!

[DazSH]

For a start I would be taking some of that oil out !
if it's above maximum then it needs reducing toot sweet .
if too high and it gets up past the breather system then it could cause engine runaway .
also check for a smell of diesel on the dipstick
if so it's a sure sign of failed regens .
as in your other post this stuff
it marked up as Genuine Saab ,but as you know Saab is no longer and basically there engines were GM power plants.
but I use that in the link .
but at the end of the day you pays your money and takes your chances.
https://www.neobrothers.co.uk/car-pa...exos2-32019299





10-4( rubber gloves!

I smelt it when I first got it and I was unsure so asked a friend who said I'm going crazy it's smells like used oil to him .. I believe he topped it up to far as the service vehicle soon light was on when I bought it he started talking junk about he's topped it up with and I quote "vauxhall oil" it's all the same.. Yes.this car is gonna need well looking after..

What causes failed regens and how do u know if it's regening first ever diesel

Smelt oil it smelled stronger than I remembered oil being but then opened my diesel fill up can that was much stronger and I would say different so hard to know or would I know for sure off its smell..? What does diesel engine oil smell like used ? Did paper test can't see seperation but oil defo needs a change

[Brian147]

If the previous owner badly treated / serviced the car the first thing I would do is drop the oil and replace filter, might as well do the air filter , pollen, and diesel filter too whilst your at it for the sake of a few more quid and for peace of mind. And don’t overfill it like the other fella...!!!!


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[.R.B.H.]

Make sure you buy a new sump plug and change it when you've done the oil change.

https://www.ebay.co.uk/itm/303101527692

[DazSH]

If the previous owner badly treated / serviced the car the first thing I would do is drop the oil and replace filter, might as well do the air filter , pollen, and diesel filter too whilst your at it for the sake of a few more quid and for peace of mind. And don’t overfill it like the other fella...!!!!


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Pollen, fuel and air already done

[DazSH]

Well ordered oil filter and sump plug still not picked my oil yet rang round and can get 5l of midrange dexos 2 oil locally for £20 but said brand was centron or sentron can't seem to find it to check if it's any good .. Would prefer local so I can get started but might have to order online to get exactly what I'm after.. Eurocarparts seem to want way to much for there oil lately

[lizzard-t]

As long as the oil you are buying has the below spec then get it brought.
The GM Dexos 2 specification is meant to be the replacement for both GM-LL-A-025 (gasoline) and GM-LL-B-025 (diesel) specifications for the European market. Oils meeting GM Dexos 2 are required for vehicles manufactured from MY2011 onward but they are also backward compatible with older models. This specification is built on the ACEA C3 standard but also contains elements from the ILSAC GF-4 deposit formation test and low-temperature sludge build-up test.


10-4 keep on insigniaring!

[DazSH]

As long as the oil you are buying has the below spec then get it brought.
The GM Dexos 2 specification is meant to be the replacement for both GM-LL-A-025 (gasoline) and GM-LL-B-025 (diesel) specifications for the European market. Oils meeting GM Dexos 2 are required for vehicles manufactured from MY2011 onward but they are also backward compatible with older models. This specification is built on the ACEA C3 standard but also contains elements from the ILSAC GF-4 deposit formation test and low-temperature sludge build-up test.


10-4 keep on insigniaring!

My fav Saab guy always helping me out thx

[lizzard-t]

I smelt it when I first got it and I was unsure so asked a friend who said I'm going crazy it's smells like used oil to him .. I believe he topped it up to far as the service vehicle soon light was on when I bought it he started talking junk about he's topped it up with and I quote "vauxhall oil" it's all the same.. Yes.this car is gonna need well looking after..

What causes failed regens and how do u know if it's regening first ever diesel

Smelt oil it smelled stronger than I remembered oil being but then opened my diesel fill up can that was much stronger and I would say different so hard to know or would I know for sure off its smell..? What does diesel engine oil smell like used ? Did paper test can't see seperation but oil defo needs a change

Sorry I did not do this earlier .
but in answer to your question about regeneration.
in the combustion process soot along with other harmful products are produced
thease products are captured by a filter called a Diesel Particulate Filter ( DPF )
on the DPF is either a 1 pipe pressure sensor ( earlier versions )
or 2 pipe pressure differential sensor ( later versions)
what that dose is measure either the back pressure inside the DPF ( earlier version)
or measures the difference between DPF upstream and downstream.
the purpose of the pressure sensor is that as the DPF fills up with thease harmful products it needs to burn thease products safely ( regeneration process) .
the regeneration process requires a certain amount of criteria to be met
1) engine temperature has to be above about 55 degrees centigrade
2) all glowplugs must be working
2) pressure differential is above about 1.5 bar .
the regeneration process is this
the ECU advances the timing
glowplugs are ignited
extra diesel is injected into each cylinder thus raising the cylinder temperature and in turn raises the exhaust temperature Which heats up the DPF to about 800 degrees centigrade.( incinerating the soot and harmful products)
normally this process will happen unnoticed apart from your Distance to empty will fall and your MPG will fall as well
because more diesel is being used .
the process requires you to be either driving or idling.
if the process is interrupted ( car turned off ) then the extra diesel being used needs to go somewhere so it will leak back down into the sump thus raising the level on the dipstick.
if this process is interrupted too many times the level can get higher than maximum on the dipstick.
it goes without saying that by having diesel mixed with oil that you are diluting the viscosity of the oil rendering it useless .and can cause bottom end failure.
diesel runaway happens when oil level is too high and the breather system starts sucking it back into the inlet side
a diesel car will run on basically anything like oil ,so once it starts sucking this mix into the inlet side it will just use that as a sauce of fuel and will burn ,and start raising the revs with the throttle being used .
it will run until such time as it's sucked the sump dry
so to stop this from happening
try to avoid short stop start trips
if you do a lot of them the take it fir a long run once a week
try not to interrupt the process.
fit a LED light which will tell you when it's doing a regen .
useful link alert

https://insignia-drivers.uk/forum/in...-light-install.
hopefully thus has answered your question.
And was not too long winded or confusing.
i have 2 cars and a van with DPF's and have never had one problem and the regen process is carried out without me knowing.
but some people get hung up on it ,if you just drive it normally then all is well .



10-4 dry wall insulation!

[DazSH]

Wow helps loads .. Another random one how do you know if for been removed ..? Car passed not and cat looking device is present at front of exhaust just curious.. But my 4 glow plugs are bad so maybe I have a regen issue due to them doing them very soon.. was meant to do them today but lost my 1/4 9mm socket and my torque wrench is 1/4 so took it as an omen to do it another day

[lizzard-t]

That's a good question there .
the mot law states that the DPF must be there and intact.no signs of tampering ( i.e. Welded)
there use to be firms that would remove the internals and map out the DPF .
but of course there is the smoke machine which measures the opacity level
on a car fitted with a DPF the opacity level should be below 0.5 ( as stamped on a plate on the car ) normally it's a square with the value inside the square.
as long as it meets this value then it's a pass .dependent on what year your car is ( pre 2014) opcom cam measure the saturation level of the DPF
anything below 80% and the DPF is working.



12-34 good job!

[DazSH]

Thx will have to check op com see what it says.. Still haven't done oil or even the glow plugs keep bottling them horror stories of them snapping keeps putting me off but the service vehicle soon msg is driving me insane

[DazSH]

Finally got oil and correct and slightly incorrect oil filter thanks to local motor parts company .. will do this soon as work has been so crazy last few weeks I keep not finding time .. Can read more on the filter in my other post very pic heavy

[DazSH]

Well year gone by oil at 15% time to do it again..