Engine Oil Rise

[pauly69]

Yes, true about the istop but there's no actual indication. There are a multitude of reasons why istop doesn't activate so you can't assume that it is due to regen.

 

[Dr_Watson]

I never know when I get a regen, no engine note change, hard to tell if instant MPG is lower if you are not driving very steady on a flat road. We will see how the oil is at the next check, car is getting filled about every 6 to 8 weeks now that summer is here and the mountain bike takes me to work.

 

[Sassimac]

Hello All...

The easiest way I pick a Regen Cycle is to watch for high fuel consumption combined with no i-Stop function.

As soon as both return to normal, I know it's done.

 

[Pluvia Plumbum]

Impact on the Official Fuel consumption Figures

About the regen, there's nothing to specifically inform you on a UK car, but I can usually 'feel' the difference in engine tone, not necessarily immediately because it is subtle, but the regen lasts for approx. 10 miles or so of driving in my car - the engine feels ever so slightly rougher during regen especially at lowish revs, which when I spot it is a pointer for me to check the real give-away which is the instant fuel consumption. I generally find that unless I'm 'coasting' then any throttle input / real load (as opposed to feathering throttle) will have the instant mpg down in the 20's where I'd normally see it at 40's/50's. I recently took to resetting the B trip-meter whenever I spot a regen, and for me it seems to be approximately every 160 miles, give or take 10 miles each way.

In very unscientific terms, I reckon that during regen the car is using double the normal fuel. Having 2-3 regens per tank of fuel, each lasting about 10 miles, results in quite an impact on overall fuel consumption!

I couldn't agree more with the above post, DPF regeneration would not have been part of the rolling road test to produce the official consumption figures - so the posts expressing surprise at the real word MPG being less than expected are a touch nave. My own vehicle a sport Auto seems to have settled down to an acceptable 41 mpg, the instantaneous figure seems to have a sweet spot dependent on keeping the speed in the 60-65 mph range when cruising on the M-way. The CX5 has a fairly bluff front end and aerodynamics take their toll on fuel consumption if you like to press on. Then again when they do the "official" figures on a rolling road aerodynamics don't actually play a part anyway and so further exaggerate the difference from an artificial ( but standardised ) Test vs the real world .

 

[dad of jon]

I couldn't agree more with the above post, DPF regeneration would not have been part of the rolling road test to produce the official consumption figures - so the posts expressing surprise at the real word MPG being less than expected are a touch nave. My own vehicle a sport Auto seems to have settled down to an acceptable 41 mpg, the instantaneous figure seems to have a sweet spot dependent on keeping the speed in the 60-65 mph range when cruising on the M-way. The CX5 has a fairly bluff front end and aerodynamics take their toll on fuel consumption if you like to press on. Then again when they do the "official" figures on a rolling road aerodynamics don't actually play a part anyway and so further exaggerate the difference from an artificial ( but standardised ) Test vs the real world .

totally agree. I can get better than official figures, Just not all the time! If they did a longer test regime, then they'd have caught a regen during the test. However a longer test will be more expensive and not in the manufacturers interest. It would be worth it for the government, because I'm only paying 30 excise duty a year. If they did a longer test and the co2 figure was higher they'd get more revenue. Maybe there's some other reason they let this go.(shady) to meet EU targets? I heard that they can tape up the gaps in the panels for the test, so they probably have a fan blowing at the speed the car is doing on the rolling road to simulate real conditions if they don't test on a real road.


http://green.autoblog.com/2013/03/1...vantage-of-eu-fuel-economy-test-by-taping-up/

 

[alex1706]

totally agree. I can get better than official figures, Just not all the time! If they did a longer test regime, then they'd have caught a regen during the test. However a longer test will be more expensive and not in the manufacturers interest. It would be worth it for the government, because I'm only paying 30 excise duty a year. If they did a longer test and the co2 figure was higher they'd get more revenue. Maybe there's some other reason they let this go.(shady) to meet EU targets? I heard that they can tape up the gaps in the panels for the test, so they probably have a fan blowing at the speed the car is doing on the rolling road to simulate real conditions if they don't test on a real road.


http://green.autoblog.com/2013/03/1...vantage-of-eu-fuel-economy-test-by-taping-up/

I like your thinking.

Fudge the figures and we the consumer pay less tax.

Win Win Situation.

Alex

 

[levoz]

I bought a 2009 Mazda 6 2.2d around 5 months ago with 92k on the clock. It came with a full Mazda service history which showed that the car had had a replacement short engine at 71k miles "customer detected a knocking noise". It had been serviced at the next correct service interval 87k and has now done 97k. When the DPF light started flashing last week we booked it in for servicing at the local Mazda dealer. Unfortunately as my wife was returning from work the other day (the day before the service) the car suffered a complete (electrical) power failure on the motorway due to the fracturing of the bolt holding the earth lead to the body. This was an easy fix but when I attempted to restart it the engine made a terrible combination of squealing and knocking noises. It is now with the local Mazda dealer who thinks it has had a 'catastrophic engine failure' probably due to oil starvation. Shortly after buying it I read some of the posts on the internet about DPF and rising oil levels and started checking the oil at least twice a week. My wife does a daily 60 mile motorway commute, so in theory ideal motoring conditions for a diesel with DPF. The oil level has not really fluctuated much and has only needed about 300ml of topping up in 6000 miles. How can it be possible that an engine which has largely been renewed, serviced exactly as per the manufacturers' recommendations, and has frequently had its' oil level monitored be subject to a second engine failure in 25,000 miles unless there is a congenital design fault? We are looking at a bill of approximately �5000+ or just give up and throw the car away. There is some talk of a deal with Mazda but I have been told not to hold out too much hope. The amount of discussion on the subject of oil levels and DPF regeneration is such that I am surprised that there seems to be no official company statement on the subject. My last three cars have all been diesel estates built by Alfa and BMW. In all three cases they were bought with 70k on the clock and sold with around 140k on the clock. In all three cases none of them needed anything other than service items such as oil, brake pads and discs. Yes, it would appear that even an Alfa 156 is far more reliable than than the current edition of the Mazda 6. I doubt if I checked the oil on the Alfa more than once a month. If there is a congenital design fault then the company should address it properly and perhaps offer owners more frequent servicing with removal of the sump and cleaning of the oil filter strainer at every oil change or something along those lines (see similar post by another 2009 Mazda 6 owner in Honest John).

I understand I was one of the first to receive the ECU update and dipstick B back towards the end of January. This resulted in minor slowing of the oil level rise but still meant I'd reach the original X mark level in around 3,000 to 3,700 miles.

So the 'fix hadn't worked for me.

The dipstick modification with much higher X-mark was clearly a time buying measure by Mazda, to give them some slack with new and existing Mazda owners whilst they really address the issue. This in itself is clearly no fix and this was independently verified by an independent expert.

So for me, I could not continue with the fuel dilution doing untold wear/damage to the engine, the risk of 'self fuelling', the cost of 4 oil changes per year and the most awful customer experience beyond imagination from MazdaUK.

So for me, I pursued a full refund under the sale of goods act 1979 as the vehicle was so far from the performance specification it was deemed 'unfit for purpose'. I'm pleased to say my case has now finally and completely settled. I must stress, MazdaUK were more than difficult at each and every step of the way, both with myself and my dealer but my dealer were a completely different story; helpful and persevering through the same pain with MazdaUK.

I have amassed so much information that I'm looking into a dedicated post or possibly site.

For those of you for whom the fixed has truly worked then I'm pleased for you. For those others, my refund and return of vehicle gives me the peace of mind that I will never, ever have to deal with the atrocious levels of customer service at MazdaUK again.

 

[Dr_Watson]

Quick question, sorry, I know this has been asked but I cant find the thread.

Are you guys pushing the dip stick all the way in ie to the position you have it when driving, or are you pushing it down without clicking it home, then lifting it out.

Its important to know as pushing all the way in, Im 1mm over the X, just till it touches Im at the high dot only.

 

[erhayes]

Yes. Push the stick in all the way in to seat it.

 

[dad of jon]

I had 3700 on mine before it reached the old X.

Mazda have agreed to refund the cost of the oil change and have mentioned there a service program applies to 'some' 2.2D's which is a new dipstick and PCM upgrade.

not quite a 'recall' but I can understand why they are shy of using that word, because if the uk press gets hold of it, it's bad publicity.

Update: 5686 miles and half way between full and new X.

I will check again in a day or so to see if it is perhaps a mis-read. Although I had the same reading twice!
The car was doing a re-gen, I arrived at my destination about 8.5 mins after I noticed the regen so it should have been right near the end anyway.

So traveling home about 8 hours later I must have driven about 300meters came to a stop and i-stop activated. Clearly not continuing the 'unfinished' regen then. it was about 26 Deg. C outside.
The blue light did not even appear on startup.

so what does this all mean? If the readings are correct and not due to an unfinished regen or the hot weather, the car is not going to make it to 10K without another oil change.

 

[Morsa]

I had my PCM upgrade in May. Had run 3.500 kms after that and the oil level stands still at the point it was when the upgrade was done. Before it was rising at a pace of 2-3 mm each 1.000 Kms. For me, except surprise, the case is fixed. So is for many colleagues in the spanish CX-5 forum.

 

[dad of jon]

I had my PCM upgrade in May. Had run 3.500 kms after that and the oil level stands still at the point it was when the upgrade was done. Before it was rising at a pace of 2-3 mm each 1.000 Kms. For me, except surprise, the case is fixed. So is for many colleagues in the spanish CX-5 forum.

Thanks for your update. did you have the exhaust pressure sensors replaced?

 

[dad of jon]

Update: 5686 miles and half way between full and new X.

I will check again in a day or so to see if it is perhaps a mis-read. Although I had the same reading twice!
The car was doing a re-gen, I arrived at my destination about 8.5 mins after I noticed the regen so it should have been right near the end anyway.

So traveling home about 8 hours later I must have driven about 300meters came to a stop and i-stop activated. Clearly not continuing the 'unfinished' regen then. it was about 26 Deg. C outside.
The blue light did not even appear on startup.

so what does this all mean? If the readings are correct and not due to an unfinished regen or the hot weather, the car is not going to make it to 10K without another oil change.

checked this morning. 240 miles later it is halfway between x and full mark. I also noticed my range lost around 20 miles during a regen (in addition to the distance traveled.) that took my mpg from 60.5 mpg to 48.5 after the regen. I did manage to get back up to 52 by the end of the journey.

 

[angryman73]

I too have been hit by the dreaded oil rise. Needed an oil change at 3500 miles. Worst part is that the dealer charged me 130. I've since spoken to Mazda and they're 'investigating'....but not committed to refunding me. Very poor customer service. As a minimum they should have asked the dealer to refund me. They cannot justify a car needing an oil change at 3500 miles. As far as I'm aware, I have the latest dip stick and software. The signs are not good. I'm wondering whether the CX5 is going to be another Mazda disaster...RX8 was notorious for being an oil burner. One things for sure, no more Mazda's for me. My mate was going to order a CX5 until I told about the problems I'm having. I just hope that the 'fix' Mazda put in place is not a sticking plaster that pushes the problem outside of the warranty period at which point they wash their hands.

I'd definitely be interested in hearing about how one of the forum members got a refund. I reckon a letter to Watchdog may be in order. Companies don't tend to take any notice until they get bad press.

 

[Morsa]

Thanks for your update. did you have the exhaust pressure sensors replaced?

Sorry x being late. Yes. The exhaust pressure was replaced one week after the PCM upgrade. I have noted a reduction in the gasoil consumption as well. Regens are shorters too, before 20 min or 20 kms, now 10-12 min, 10 kms. But still they occurs every 220-250 kms.

Regards.

 

[alex1706]

I too have been hit by the dreaded oil rise. Needed an oil change at 3500 miles. Worst part is that the dealer charged me 130. I've since spoken to Mazda and they're 'investigating'....but not committed to refunding me. Very poor customer service. As a minimum they should have asked the dealer to refund me. They cannot justify a car needing an oil change at 3500 miles. As far as I'm aware, I have the latest dip stick and software. The signs are not good. I'm wondering whether the CX5 is going to be another Mazda disaster...RX8 was notorious for being an oil burner. One things for sure, no more Mazda's for me. My mate was going to order a CX5 until I told about the problems I'm having. I just hope that the 'fix' Mazda put in place is not a sticking plaster that pushes the problem outside of the warranty period at which point they wash their hands.

I'd definitely be interested in hearing about how one of the forum members got a refund. I reckon a letter to Watchdog may be in order. Companies don't tend to take any notice until they get bad press.

Forget Watchdog, they look for sensationalism and what makes good TV.

In reality, I managed to get a refund on my oil change when mine hit the X mark after approx 6,000 miles.

Initially It was suggested by my dealer I was on my own, so I paid up the sum of 117. However with all the troubles I've had with the TomTom for the last 6 months (so far unresolved), I managed to get Mazda to cover this as it is a recognised problem, so they happily agreed to arrange a refund.

I would have thought there would be no issue regard a refund being it is a well known documented problem re oil rise.

If you have another issues such as I keep getting with the Sat-Nav, then that will add to your case.

You say you think you have had the dip-stick and ECU mod. Do you have a record of this from your dealership? If not, formally request the information from Mazda quoting the Freedom of Information Act 2000. Mazda will then instruct your dealer to furnish you with the information, and they will take you seriously. Also have you had the exhust sensor mod?

I am in serious dispute over my dealings with Mazda. The latest is I am supposed to be getting everything I need from the dealers records, as Mazda tell me they have passed my details on for all information to be forwarded to me, to date that has not happened. The longer I am left "in limbo" the stronger my case seems to develop. I've gone beyond pushing Mazda, and as my contract was with the dealer, then I will be utilising the Sale of Goods Act as appropriate.

Regretfully I'm in the middle of a blame culture, however the more grief Mazda get, the more they will listen to us THE CUSTOMER.

Love the car, detest with a vengeance the customer support.

 

[Dr_Watson]

My oil level is above the x, I have the old style dip stick, I did get the exhaust pressure sensor changed at 10k when it failed. The dealer did update the software but wouldn't give details, to get details they said I would have to contact Mazda HQ! I have a week old daughter and don't have the time to get to the the local dealer. When I do it will be an oil change and dip stick upgrade plus any software that needs updating. I won't be arguing about who pays just now as that's not the kind of stress my family need right now, but I will certainly document it all for the future. It will be interesting if they acknowledge that there is a new dip stick available, if they give me the same nightmare as with my exhaust sensor, then I'm off to another dealer, I only have 4 or 5 dealers within 30 mins drive!

 

[jy1]

Hi Angryman.
As part of the new dipstick/ecu update our oil was changed as it had just gone above the X mark at Mazda's cost..... 3300 miles on clock. The Hexham dealer didn't do the exhaust sensor as they said it wasn't on the recall.

 

[angryman73]

Hi All

Thanks for the responses. I'm still waiting to hear from Mazda. However, I'm not hoding my breath. I believe I have the latest software and dipstick as I only received the car late April. What has been people's experience with MPG? I'm getting around 41/42. I wasn't expeting the advertised figure. However, this is some way off the advertised MPG.

 

[Dr_Watson]

41 or 42 is correct. The advertised figure is fairly easy to reach but you will fall asleep at the wheel while doing so!