DPF

[Skypilota72]

The wife and I went to a town nearby for a Dr appmt and there is a pretty big Kubota dealer there. I said to her that one of these days I'm gonna stop in there instead of talk about it. But one question I have to ask of them might be better here: "When does DPF come into the scene when buying a new tractor?" It seems I've heard that it is a function of HP? Is this true of all manufacturers?

I have to say outright I would NOT buy a new tractor that required DPF. And I sure the heck would spend mega bucks and void the warranty with a defeat mod. So, folks, what's the skinny on new tractors and DPF?

Not all manufacturers use DPF. Mahindra, as an example, uses MCRD technology, but does use an EGR instead. This goes all the way up to 75 hp on all their tractors. Their tech is less problematic when repair/replacements is necessary.

 

[Skypilota72]

Neither have DEF. Only DPF for the Kioti and DOC for the Mahindra.

What Mahindra does is using a DOC. A DOC is more or less a DPF without a way to force a Regen. It relies solely on good engine loads to keep the exhaust temps high enough that it continuously burns the particles inside the DOC.

The issue with this system is that it can get clogged, really clogged if the engine is not ran hard enough. A good drive on the road in the highest gear every once in a while takes care of it though.

This was also how Branson did initially, when emissions came into play.

Within 5 years of ownership, my Mahindra has never had this problem. The RPM’s do need to be @ 1500-2000 depending on activity, and is designed to operate safely in that zone. Less down-time dealing with complicated emissions controls.

 

[jyoutz]

I’m really surprised I haven’t seen anyone talk about Mahindra Tractors on this thread, only 1 other.
I’ve owned three Mahindra Tractors and never had to worry about DEF. From my understanding, Mahindra has been able to recycle the exhaust and avoid, legally, the need for DEF up to 100 HP. I’m sure other manufacturers will catch up to the Mahindras one day but for now. The burned diesel smells a little different from the old days but not near as bad as after you run DEF. I have borrowed a friends Kubota and swore I’d never buy another tractor that had to regin!

My Kubota does a regeneration lasting 10-15 minutes every 50-75 hours of use. Nothing to get too worked up about.

 

[R Barger]

Not all manufacturers use DPF. Mahindra, as an example, uses MCRD technology, but does use an EGR instead. This goes all the way up to 75 hp on all their tractors. Their tech is less problematic when repair/replacements is necessary.

I just put a deposit on a Mahindra 4540. The MCRD is one of the things that attract me to it.

 

[bordercollie]

My major complaint is that it seems to always want to regen just as I drive up to the barn at the end of the day. So either I find stuff to do, let sit and regen or cancel the regen. I do not like to cancel it. So if you see me hauling rock after dark it is just to be doing something while the tractor burns extra fuel to put all the pollution out in 15 minutes all at once instead of a little all the time.

Same here. Right when getting to the barn the light comes on . It takes longer than 15 min for our 90 hp JD and don't dare have any air restriction or it can run hot during regeneration. Also don't cut off the engine until it finishes. We've spent almost $2000 in DPF repair. If you reeve it up it does cut down on the time.

 

[walnutman]

If you want to avoid a DPF shop for tractors below 25 hp or older than 2014. I had bad experience with a diesel pickup with DPF so I held the line at 25 HP when I bought my new tractor. It's adequate for me.

Yea but a 25hp truck ain't gonna cut it.

 

[walnutman]

The wife and I went to a town nearby for a Dr appmt and there is a pretty big Kubota dealer there. I said to her that one of these days I'm gonna stop in there instead of talk about it. But one question I have to ask of them might be better here: "When does DPF come into the scene when buying a new tractor?" It seems I've heard that it is a function of HP? Is this true of all manufacturers?

I have to say outright I would NOT buy a new tractor that required DPF. And I sure the heck would spend mega bucks and void the warranty with a defeat mod. So, folks, what's the skinny on new tractors and DPF?

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[Rdrcr]

Soon all that crap will disappear. Changes at the EPA. That is what you should be talking about. Wait a little longer till the dust settles.

Not true. Those laws are here to stay unless Congress gets involved.

Mike

 

[PhilnTX]

Much ado about nothing. That's my take after having owned a Kubota M7060 for the past 8 years.

I too was worried about the DPF (Diesel Particulate Filter). No more. Regeneration is a seamless process...if it weren't for the light coming on in the dash telling me the regen process was underway I wouldn't even know. Light goes on for about 15 minutes, then it goes back off again when the regen cycle is done. No difference in the way the tractor sounds or operates, and I don't have to do anything myself - the process is automatic.

Interesting, on my John Deere, the RPM locks at 1,500 for 15-20 minutes during regen. Can't manually throttle it down.

 

[RJScott2005]

If you're not looking to buy right now, it is possible that the DPF and DEF requirement will be removed by the EPA within the next year or so. It's been in the news as the current POTUS is trying to remove certain rules from the EPA.