Document first appeared in this thread.

http://www.briskoda.net/forums/topic/233266-check-oil-level-465-miles

Overall, the process of weighing oil is pretty sound although the instructions in that post are not entirely clear. From a personal point of view I would have written them differently so that they are totally clear. And in answers to Jabo's question, whilst the volume of oil will alter with temperature the actual mass will not so the process is OK (sort of).

The important thing is to know the mass of oil at the start, the mass of oil at the end, and the mileage covered.

The difference in mass of oil is that which has been consumed over the distance of the test. To convert this mass to a volume at 15 deg C, divide this mass by the density (0.856g/ml) and this tells you how many mls of oil consumed over the test distance. Then convert this to mls/1000 km by dividing 1000 by test mileage and multiplying the number of mls consumed.

The only other part that concerns me in this process is that the accuracy of the balance used, the skill of the operator to know what they are actually doing etc. and the precision in which it is all carried out. Variables are going to be oil temperature at time of each drain and ensuring that the drain is carried out for the same length of time on each occasion. Differences here can give rise to variable results.

As per the instructions, a loss of 42.8g of oil over 100 kms is equivalent to the VAG limit (500mls/1000km).

Im planning to send off my old oil to be analysed when it goes in for its first change , will give an early indicator of any problems i reckon

I can tell you what the analysis will conclude.

1. Large amount of residue characteristic to oil working at too high temperatures

2. large amounts of metal debris from running in process

3. Fuel in the oil present

Just kidding

What are you hoping to gleam for such testing?

The oil isnt too high a temp , 150 degrees would be too high and mine barely exceeds 110

It will tell you how the engine is wearing, If it has unhealthy amounts of anything then its ammunition for later warranty claims??

OK, I'd curious of what such an examination entails and how do results look? I like looking at test results

You get something like this

http://www.oilanalysisuk.com/engineoilreportexample.pdf

Costs around £50

All right, this is a chemical analysis report. Do they do particle one as well?

I found this quite explanatory.

http://www.machinery...l-analysis-know - General

http://www.machinery...ebris-analysis- - Particles

http://www.machinery...m-potassium-oil - Chemical

Edited 17 December, 201213 yr by Jabozuma

Yes its from a spectrum analyser , i'm sure its possible to get a particle one as well but this will tell me what i need to know

Looks like I will be joining the new engine gang in the new year too.

Sp1ke sorry too hear that, oil usage ?

Looks like I will be joining the new engine gang in the new year too.

What was your oil consumtion like please??

The oil isnt too high a temp , 150 degrees would be too high and mine barely exceeds 110

It will tell you how the engine is wearing, If it has unhealthy amounts of anything then its ammunition for later warranty claims??

Are u talking about Celsius or Fahrenheit

Cheers

Had an oil & filter change at around 5k, no oil used till around 8k then it started.

I didn't track the amount used initially & just topped up as & when needed. At around 12k the warning light came on & was topped up to the correct level, at around 13k the level was below hatched area just on the ball but no warning light yet! so topped up to correct level again. After a few hundred miles its about 3/4 of the hatched level.

Levels always checked when warmed up as per handbook.

So I'm told a new short engine is on order & they'll be in touch in the new year.

Fwiw it's an 11plate car with no engine mods. I was planning on an itg filter & apr map, but when it started using oil decided to wait till I knew if there was an issue or at least till after the next service.

Tbh I'm not overly concerned about it just yet, but that will change if the new engine follows the same pattern.

Seems odd that skoda change some engines for complete new units and others for short engines. My dealer was surprised when they offered me a whole engine as they thought it was to be the short engine.Mine is a 2011 with 12000 miles prior to replacement. So far 900 miles and the new engine has used about 250ml which was expected with a new engine. My intention was to get the apr map but as above once the oil issue is fixed.

I got a complete engine at 37k

That seems a good outcome. I would be interested to know who you dealt with at Skoda UK and how the calculation on cost of use is calculated, i.e. how much per mile. I totally agree with your comments on the vRS being the best car around for the cost when considering performance, driver satisfaction, practicality and economy.

I'm still monitoring my oil consumption following the oil breather modification. After the first 370 miles I had the worst ever consumption result when I had to add 0.6 litres of oil. However it has now carmed down and appears to be hovering around the 0.5 litre per 1000 km limit. I don't understand how this can be technically possible (accepting the difficulties taking consistent and accurate oil level readings) but my dealer says that a similar trend has been reported on other cars judging from comments from a technician at SUK. I have an oil consumption check pending and the car will go in for this once I'm confident it will fail.

My dealer has six MkII vRS's on his books and only oil problems with mine. The message I keep getting from Skoda UK is that the problem is not so widespread. I have so far failed to get any level of technical information from my discussions with Skoda UK and there is no acknowledgement that the latest CTHE engine addresses the consumption problem. If I do claim for a replacement engine I'm told that I won't get a new catalytic converter.

I agree that the ECU update that comes with the oil breather mod changes the running characterisics of the engine and I suspect fuel consumption is slightly up as a result.

I would be more than happy with a replacement car rather than a replacement engine if the oil consumption is not resolved.

I am now positive the car is staying in a lower gear longer than before which is contributing to the increased fuel consumption.

Although several comments on here say fuel consumption has increased in these lower winter temperatures, I never had this problem the previous year when I didn't have this breather pipe fitted.

It was the dealer garage that said the VRS's can't have variable service which comes from SUK and showed on the document from Skoda that I was showed.

Oil usage is dependent on how the car is driven and hard acceleration from low gear seems to give the worst oil usage. I am wondering if the weight of the car makes a difference i.e. running regularly on a full fuel tank uses more oil in being a little harder to pull. I tried filling half way a lot recently and oil usage seems to improve things a bit. Don't know if anyone else has tried this.

Oil usage is dependent on how the car is driven and hard acceleration from low gear seems to give the worst oil usage. I am wondering if the weight of the car makes a difference i.e. running regularly on a full fuel tank uses more oil in being a little harder to pull. I tried filling half way a lot recently and oil usage seems to improve things a bit. Don't know if anyone else has tried this.

I wouldn't of thought the mass of fuel in the car will make that much difference. 1 lite of fuel is approximately 0.72 kg so 20 litres of fuel weighs about 14 kgs, which in itself is approximately 1% of the mass of the car.

I wouldn't of thought the mass of fuel in the car will make that much difference. 1 lite of fuel is approximately 0.72 kg so 20 litres of fuel weighs about 14 kgs, which in itself is approximately 1% of the mass of the car.

I think you would be surprised. I used to have a Subaru Impreza Turbo and the acceleration from standstill significantly increased with a quarter full tank to a full tank. I reckon if you tried booting your VRS with a full tank over a short distance and timing it, then trying again with a third full tank you would be able to see the difference. Also most of the effort in shifting a car is over the first 10 or 20 feet which is when you will see the oil blowing out the back.

I am seriously tempted to lose the 25kg balancing weights off the rear bar as I don't flog the car and with that and experience I don't think I'm likely to spin it. I believe someone on here has removed them to improve acceleration already.

The rear weights removed on the hatchback, then the spare wheel & jack make a difference, rear seats also

then half half a tank of fuel.

You need to decide if you want a passenger car or something else. Compromised in its use possibly.

You can save weight and maybe go faster. You do often on the flat or up hill.

or Save weight & save fuel.

Usually you do not end up doing both very successfully at the same time.

ie, going faster and also fuel saving.

The Fabia vRS is easily effected in its MPG by extra weight being carried.

& tyres fitted, road conditions and surfaces being driven on, weather etc.

It is just a car tho.

(i have the Weights removed. sometimes the spare & sometimes 2 spares are carried.)

http://www.briskoda....long-run-in-vrs

george

EDIT PS.

Some/a few might have 'Oil blowing out the back'.

Probably all might have some soot build up in the exhaust blown out the back when you boot it first after pottering around and getting soot in the exhaust from the engine that runs a bit rich when cold,

Seeing as most of you own VRS's on here thought I'd ask a question. Do any of you guys/gals get flashed a lot by other drivers coming towards you? It keeps happening to me and I have no idea why. I've inspected the car numerous times, the lights are all working and not on dipped or full beam or anything strange for the time of day for driving. I'd understand if it was another VRS owner but its just other cars. Answers on a postcard please only my car is starting to get a complex!

Merry Christmas.

I would imagine it is the Sidelights that are annoying people,

being mistaken for Fog or Driving lights.

They are still rather bright when on with the Dipped Beam even as Sidelights with reduced brightness

and not on on their own as 'DRL's'

http://www.briskoda....onfused-as-fogs

george

Merry Christmas George.

Thanks for the thread. I am glad I am not the only one getting flashed. I wouldn't mind if they were fog lights but they are DRL's so I can't switch them off. I also wouldn't mind if I was the only car on the road with them fitted! I just flash back now thinking people are being friendly.

You can Switch them off if you want.

They are not a legal requirement to have on.

The on/off switch is behind a panel near your right knee.

Then just switch on the Sidelights during the day,

if you want to still have something that looks like DRL's.

They are less bright when on as sidelights, less likely to get flashed at

but the rear Lights and number plate will also be on.

george

A possible cause and/or solution for the vexed oil issue is here (see post 1040).

http://www.vwwatercooled.com.au/forums/f128/polo-gti-high-oil-usage-discussion-thread-57967-104.html

Finally someone is starting to listen, booked in for oil consumption test on the 4 th . VAG Australia have told nectar they gave been trying to contact me about this test as the car is still using copious amounts of oil . So in short the car has not been bought back or within warranty specifications . Keep u posted