waterguy

I am a former mazda owner, 323, and want my next purchase to bring me back to mazda. started looking at the 3, then the cx 5 and now the new 6. My dealer said the diesel should be out in the late summer/early fall. Like the diesel more for performance second fuel economy...I don't have a long commute.
Doing research on line and reading about diesels and the DPF/regen, I am concerned about getting a diesel. I have read the issues and fix(?) for the cx 5 in australia, and have heard the 6 2.2 diesel will not have this problem. Does anyone know if the 6 2. diesel will use the same method of injection in the cylinder during the exhaust cycle or not? I have tried to get specific details from mazda usa and on internet searches but without luck.

Thanks in advance for your responses.

waterguy

Apparently there will be no functional changes to the regen method for the 2.2 skyactiv D. I have spoken with my local dealer and he notes no significant changes. I suppose the 6 will address the rising oil issue, by modifying the frequency and duration of the active regens, but diesel will be injected in the cylinder.
I test drove the new 6 AT touring and really liked it, but want to drive the manual tranny, and the diesel.
I have driven the passat TDI 6MT and want that torque from the 6, but am concerned about the dpf technology. I will follow the rollout of the diesel 6 in the US and hope mazda is successful with it.

ASH8

It will be the same engine as used in the CX-5 2.2 SA-D..

Since the ECU update (Regen frequency) I have not heard of any more rising issues, have you?,
I will say one thing and I don't care what diesel brand engine one owns, they are NOT for short commutes.

Considering the US spec 6 diesels are not even made yet, I believe most of the bugs will have been sorted out.

waterguy

I hope so want it to be a success! It does appear the rising oil issue is being addressed. Is there a recommended type of daily driving commute minimum distance, "short commutes" is somewhat relative.

RIWWP

iTrader: (2)

I believe that it's largely time based, not mileage based. You want everything to get hot, and you need to spend a proportionally high amount percentage of the time at temperature. At a pure guess, call it ~75% or more of the time the engine is on. So if it takes 5 minutes or so to get up to temp, then you probably want a general average minimum of 20 minute drives. In some metropolitan areas, this can easily be 5 miles in that 20 minutes. Other areas it's actually closer to 16-22 miles.

This doesn't mean that short drives are to be avoided at all cost, just don't make them a significant portion of the whole. Like I drive 74 miles one way when I head into work (not every day), but the store is 1/3rd of a mile away. If I bought a diesel for my wife, it would only ever see that 1/3rd of a mile, but if I had it, then it would see plenty of the long duration, so the quick store trips periodically aren't really that big of a deal.

waterguy

okay thanks, round trip for me is 30 miles, with weekend trips longer, and with the diesel I would want to make even more weekend road trips.