This parts list shows an oil level sensor - or does it mean oil temperature level?

 

https://skoda.7zap.com/en/cz/yeti/yet/2013-666/9/919-919040/

 

 

Euro 5 & Euro 6 1.2 TSI and eve Euro 5 that were manufactured when Skoda still had a 'code for fixed servicing' (same engine in a VW were showing code for variable)

have a 'Yellow oil can Low Oil warning light' & a Red Oil Can Low Oil Pressure light and some cars also put a message on the Maxi Dot.

Being in a Fabia, Yeti, Roomster, Octavia, Rapid should maker no difference.

Doesn't look like @ZouchM is interested in the advice here. Last seen Wed 11:15 so not looked at any replies......

 

On reading his OP, a few things don't make sense, minor leak -> low oil level and had to be recovered? Did the engine seize?

 

Garage found a blocked oil filter? Really?

 

2 hours ago, muddyjim said:

This parts list shows an oil level sensor - or does it mean oil temperature level?

 

https://skoda.7zap.com/en/cz/yeti/yet/2013-666/9/919-919040/

 

 

Level and temperature, in one 3-pin package. G266 in the circuit diagrams. Info (about both) comes out to the instrument cluster as an encoded digital pulse stream I seem to remember.

Strangely, no reference to an oil temperature sender on that page...

G266 is fitted to any car that may be set to variable servicing, as I understand it.  Presumably all Yetis (or all UK Yetis?) weren't sold on fixed servicing only? 

That actually was the case for UK-sold Mk1 Fabias according to our resident expert @Tech1e IIRC, so they lack G266, not sure if there are other examples though, amongst 21st-century Skodas? Anyone?

 

 

18 minutes ago, xman said:

Doesn't look like @ZouchM is interested in the advice here. Last seen Wed 11:15 so not looked at any replies......

 

On reading his OP, a few things don't make sense, minor leak -> low oil level and had to be recovered? Did the engine seize?

 

Garage found a blocked oil filter? Really?

 

Possibly a garage asking for help 'in disguise' so not likely to come back to admit their failing.

 

 

@Llanigraham how's your evidence for your earlier claims coming along?

 

Funny thing: I searched for the phrase 'oil temperature' throughout over 9000 pages (praise be for 'ctrl-f') of circuit diagrams for Yetis and found only two types of hit.

Gearbox oil temperature sender G93, which I hope we can agree you weren't referring to; and oil level and temperature sender G266, which is what I expect you'll find embedded in the base of your engine's sump.  I guess the reason for your ignorance of the level function may be to do with the fact that there is no readout of oil level anywhere (except via VCDS etc.), just an alarm/yellow warning light if the level falls too low.

 

 

 

 

 

 

 

OK, I'm wrong.

I think my EA111 1.4 16v (the earlier Yeti 1.2 8v also has the cam chain EA111)  has an oil level sensor - however it's never been triggered yet.

 

As suggested further up the thread, change the oil filter (and oil whilst you are at it) making sure any left over rubber oil seals are removed.  and make sure it is not overtightened (this damages the drain valve) . A left over oil seal or damaged drain valve can cause oil pressure issues with the EA111 engine - don't run until sorted.

 

 

 

 

 

 

 

Edited 12 April, 20197 yr by bigjohn

2 hours ago, Wino said:

Level and temperature, in one 3-pin package. G266 in the circuit diagrams. Info (about both) comes out to the instrument cluster as an encoded digital pulse stream I seem to remember.

Strangely, no reference to an oil temperature sender on that page...

G266 is fitted to any car that may be set to variable servicing, as I understand it.  Presumably all Yetis (or all UK Yetis?) weren't sold on fixed servicing only? 

That actually was the case for UK-sold Mk1 Fabias according to our resident expert @Tech1e IIRC, so they lack G266, not sure if there are other examples though, amongst 21st-century Skodas? Anyone?

 

 

Funny thing: I searched for the phrase 'oil temperature' throughout over 9000 pages (praise be for 'ctrl-f') of circuit diagrams for Yetis and found only two types of hit.

Gearbox oil temperature sender G93, which I hope we can agree you weren't referring to; and oil level and temperature sender G266, which is what I expect you'll find embedded in the base of your engine's sump.  I guess the reason for your ignorance of the level function may be to do with the fact that there is no readout of oil level anywhere (except via VCDS etc.), just an alarm/yellow warning light if the level falls too low.

 

 

HTP engines mk1 and mk2 don't have an oil level/temp sensor in the UK at least, so variable regime is not possible on these.

 

Don't rely on the oil level alarm light being enabled even if the sensor is fitted. It may even be disabled if fixed interval servicing regime is set.

 

I've read somewhere that oil level measurement is not very accurate because oil is being pumped, moves and churns all the time while driving, it is mainly used as part of the variable service calcs.

 

I know on our 2011 Octavia 1.2tsi, the sensor also had an oil quality function because I was able to identify that the dealer put in 502 oil instead of 504 in variable service mode, the 18,600 mile service interval started coming down by thousands of miles after only 2 weeks.

6 hours ago, xman said:

Don't rely on the oil level alarm light being enabled even if the sensor is fitted. It may even be disabled if fixed interval servicing regime is set.

 

I'm not sure on that one @xman; I can see why you'd speculate that, but it would seem 'dafter than usual' of VW group to ignore the available warning of critically low oil level.

The presence of the numbers in VCDS points me towards thinking it will still be enabled.

I guess with fuse pulled, if I don't get some sort of warning (flashing yellow oil can, sensor fault?) that would suggest it's disabled or being (thoroughly) ignored; will try on my way to the gym.

I don't fancy deliberately lowering the level just to experiment; but I have a spare sensor somewhere (in bits), that I might be able to reassemble enough to plug into the loom outside of the sump and see if that triggers a warning; (if I can find it, or all the bits of it.)

 

Accuracy etc. even less relevant in this thread than the existence/not of this thing.

 

There’s no such thing as an ‘oil quality sensor’.  The measurements you’d need to make to determine the difference between a 502 and 504 oil need machines in a laboratory.  The remaining oil life counter uses an algorithm with various inputs, such as fuel used, cold starts, oil temperature, oil level and time to calculate the remaining service life.

39 minutes ago, weasley said:

There’s no such thing as an ‘oil quality sensor’.  The measurements you’d need to make to determine the difference between a 502 and 504 oil need machines in a laboratory.  The remaining oil life counter uses an algorithm with various inputs, such as fuel used, cold starts, oil temperature, oil level and time to calculate the remaining service life.

 

I believe the sensor fitted in my case is this one or similar

 

Oil_Level_Sensor_SGM110_en_0404fin.pdf

 

It measures "oil type" by measuring permittivity,  504 has a special additive to distinguish from other oils with a specific permittivity. It also measures viscosity using a piezo vibrator system which is part of the "oil quality" assessment.

 

How else would you explain my observation that after a variable service had been reset showing 18600m/372days that after a couple of weeks and 700 miles it had started dropping dramatically. In the end, at 3 weeks ,IIRC, it was indicating service due in less than 12,000 miles/400 days?

 

The garage admitted they had mistakingly used Platinum (502.00) instead of Long life III (507.00) oil. When changed for 507.00 and reset, the service indicator behaved as expected, with the car doing >22k per year and majority 80 mile commutes it always manages to go the full 18600 service span. Its all written down in my service booklet.

 

I accept that on later year cars, this sensor has probably been discontinued, for reasons unknown, I'd speculate later engine are clean enough to rely on an a more sophisticated algorithm that excluded it and use a sensor with just temperature and level, saving VAG £££ in the process.

Edited 13 April, 20197 yr by xman

You can not distinguish between 502 and 504 oils through a simple permittivity test.  There is no special ‘504 permittivity additive’.  The sensor can make very basic measurements to infer things like oxidation and fuel/water dilution, which will impact service life.  The difference in additives between one brand and another could be more than between different oils from the same supplier.

 

It is possible that your car saw a higher rate of change of some parameter and dropped the interval accordingly; it would do this regardless of the oil in use.

Perhaps I should disclose my credentials here. I have been working in the R&D function of a major lubricant supplier for 27 years. One of the jobs I have done here is running the analytical laboratory that tests oils of all types in all ways. Other jobs I have done include engine oil product development and technical support.  I am not trying to show off, just trying to establish some credibility when talking about this stuff, as there’s a lot of misinformation and misunderstanding about oil on the internet.

 

Oil has been my only career.

I still think that what I witnessed was not a one off anomaly in 240,000 miles of running these 1.2 tsi engines and was definitely linked to use of wrong oil.

Edited 13 April, 20197 yr by xman

The only warning I got during the 2.5 mile drive was for PAS which shares the fuse; but on setting off home again I had a blinking yellow oil can.

 

I don't believe there's an oil quality measurement either.

1 hour ago, xman said:

I still think that what I witnessed was not a one off anomaly in 240,000 miles of running these 1.2 tsi engines and was definitely linked to use of wrong oil.

No doubt. The fact the oil was ‘wrong’ meant it degraded faster. The car sensed this and reacted accordingly.  Faster degradation could be due to the oil quality or the duty cycle; the car neither knows nor cares.  The document you linked describes an oil condition sensor, not oil quality.