How much oil

One of the new diesel Mazda's were having issues with oil overfilling because oil dilution caused by the DPF. I had heard of other cars with similar issues. Seems it is mostly caused by short trips. I don't know why oil dilution occurs I just know it is factor on some cars.

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Originally Posted by mowog

One of the new diesel Mazda's were having issues with oil overfilling because oil dilution caused by the DPF. I had heard of other cars with similar issues. Seems it is mostly caused by short trips. I don't know why oil dilution occurs I just know it is factor on some cars.

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OK mate, thanks. I'll have to look further into it.

I thought from your other post that for once somebody was going to say something good about a DPF.....LOL!!!!

Ok I will say something nice about a DPF.....

It's nice that I sold my Diesel Mini fitted with a DPF and brought a JCW Clubman with no DPF.

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Originally Posted by mowog

Ok I will say something nice about a DPF.....

It's nice that I sold my Diesel Mini fitted with a DPF and brought a JCW Clubman with no DPF.

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Excellent!!!:D

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Originally Posted by mowog

I was getting the oil done every 6 months and there were no issues. Last 6 month service the oil wasn't changed. As the D4 had only done a few 1000 klm since the last service.

No white smoke that I can see.

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Have you been doing that yourself or requesting it? The normal service intervals dictate that an oil and filter is changed every 26k's, not 13

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Originally Posted by LRTech23

Have you been doing that yourself or requesting it? The normal service intervals dictate that an oil and filter is changed every 26k's, not 13

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My Dealer gives me the choice. I choose to do it every 13k.

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Originally Posted by LRTech23

Have you been doing that yourself or requesting it? The normal service intervals dictate that an oil and filter is changed every 26k's, not 13

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Because my D4 Tows a lot I was getting the oil done every 6 months. Last service it hadn't done many klm since it's last 12 month service. And it hadn't done much towing this year.

OK, just did a quick bit of Googling. Don't shoot the messenger, this is my quick take. :)

DPF equipped engines have a late cycle injection of more fuel when conducting a regen. This I believe increases the exhaust gas temp, thus burning off the stuff collected in the DPF. It appears common in a lot of brands that some of the extra fuel does not burn and gets forced past the the rings/pistons thus diluting the engine oil.

It appears that other brands have a system monitor acting on either increased oil level or a predicted dilution algorithm. Post service resets or calibrations are required. Usual signs, DPF light on and then going off after a regen is normal, light staying on means a possible dilution issue and a check is required.

What does a D4 have or do? Can the oil indicator over-read, to display an oil level concern or does it stop at full. I think there is an overfill warning but is there something specific to DPF fitted vehicles?

I don't know the answer to any of those questions....anybody?, anybody?

Cheers,

Kev.

There is an overfill warning, I've seen it once. I think the threshold is 500ml over full.

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Originally Posted by Celtoid

OK, just did a quick bit of Googling. Don't shoot the messenger, this is my quick take. :)

DPF equipped engines have a late cycle injection of more fuel when conducting a regen. This I believe increases the exhaust gas temp, thus burning off the stuff collected in the DPF. It appears common in a lot of brands that some of the extra fuel does not burn and gets forced past the the rings/pistons thus diluting the engine oil.

It appears that other brands have a system monitor acting on either increased oil level or a predicted dilution algorithm. Post service resets or calibrations are required. Usual signs, DPF light on and then going off after a regen is normal, light staying on means a possible dilution issue and a check is required.

What does a D4 have or do? Can the oil indicator over-read, to display an oil level concern or does it stop at full. I think there is an overfill warning but is there something specific to DPF fitted vehicles?

I don't know the answer to any of those questions....anybody?, anybody?

Cheers,

Kev.

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Very interesting info.

To identify if your D4 has a DPF have a look at this post by Sniegy:

http://www.aulro.com/afvb/d3-d4-rrs/...ml#post1681008