Oil Consumption Fix

Haven’t heard anything kenny, interested to hear if anyone’s got info or if its gonna be a recall?

What is the castrol engine oil spec for the RS?

MJP Custom 2.0ltr stroked  Forged megabuild on meth injection

this?

Castrol EDGE Titanium FST 0W-40

or this

Castrol Edge 0W40 A3 B4 With Titanium FST Fully Synthetic Engine Oil

CheeRS

Louie

Revo STG2 Beta Map 433hp 450lb-ft 610.1 nm

?????? Game REVO

I had a chat today with Jackson’s ford regarding oil consumption on the new RS, they are a Mountune Pro dealer so have more of an interest in these cars than most run of mill ford dealers. They are advising all owners to check the oil level weekly on the new RS as the engines seem to use oil. The question is why? Jacksons have not had any official message from Ford regarding this unlike the smoke at idle issue that has been diagnosed as faulty breather part/turbo issue by all accounts.

I have been checking my engine fairly religiously and have had to put 750ml oil into it over around 3500 miles.

So, my thinking on this issue, is that it could potentially be down to boost profile that is being employed on RS linked to the breather system capacity.

The Bosch ECU that is used on the RS is what is known as a ‘Torque Based’ ECU. That means it utilises an algorithm to determine the optimum boost, fuel, ignition timing required under any load (load in inferred from TPS/MAP) to deliver the requested torque from driver input (Pedal position).  In order to deliver the power/torque curve desired boost is increased above 5000 rpm. If you glance across when driving you will see the boost gauge move up from 1.2/1.3 bar in the midrange to 1.5/1.6 bar at the top of the rev range. This is done to maintain torque delivery by maintaining volumetric efficiency.

How does this effect oil consumption? Well increased boost means increased cylinder pressures. An increase in cylinder pressure can lead to an increase in blow by and therefore an increase in crank case pressure. All modern engines employ a sealed engine breather system and Ford certainly had a beef up the breather system on RS by increasing its capacity. It’s the job of breather system (often referred to as the PCV system) is to manage crank case pressure and feed the produced blow by gases back into the intake system to be burnt during combustion. However on of the issues of sealed breather system can be oil carry over and this is because the oil within the crankcase is whipped into fine mist by the rotation of the crankshaft. Therefore the oil mist needs to be separated from the blow by gases. On the RS this is done via an internal separator that sits behind the inlet plenum.

One possible solution to the problem of oil consumption is a product I have seen on the Mountune USA site, that is due to be released in the UK in the next couple of weeks.

http://www.mountuneusa.com/Breather-Plate-Ford-EcoBoost-2-0L-and-2-3L-p/2363-obp-aa.htm

This internally baffled oil separator gives a 100% increase in the baffle surface and should help. I am certainly going get one for my RS and will report back on if I see an improvement in oil consumption.

EVO6RSS..

Nemesis,

I am being told by Jacksons that the reports from owners regarding oil consumption are mixed and that how the car is being driven is having an effect. Those that drive the cars hard are reporting increased oil consumption. As you have only done 1000 miles or so, then I am assuming that you have run the car in relatively gently for these miles with a mix of load and rpm.. so it would stand to reason that oil consumption would low during this period.

Misimoto are good company, with solutions based on engineering principles rather than pseudo science.. It will work well as an external separator, my only concern would be that you are going to be losing the oil that is separated if I understood the video correctly as the drain pipe exits under the car.

The mountune item item is an internal baffle and as such you won’t lose any oil, it should drain back to the sum..

EVO6RSS..

I would agree that DI injection engines can be more susceptible to carbon build up, but the sources I have read indicate that this seems to be an issue on a number of VAG cars. It would also seem to be dependent upon fuel quality and how the car is driven. I.e. short drive cycles around town and cheap supermarket fuel.

Personally I tend to try to utilise as much of the performance as is safe dependent upon road conditions and traffic with my RS on my favourite twisty B roads. The RS also only drinks 99 RON fuel.

If it was me, I would fit the Mountune part first and then if consumption was still and issue look at a catch can. As to how the 2 components would work together, logically, they shouldn’t cause an issue, but as I have no first hand experience I wouldn’t want to offer an opinion either way..

EVO6RSS.