Towcar of the Year winner announced

Oneputt replied on 04/05/2018 07:56

Posted on 04/05/2018 07:56

Googles 'Mazda oil rise' and the vast majority of problems discussed seem to be in Australia.  It seems that the oil rises above the max mark on the dipstick of its own volition, originally the advice was to take the car in and get an oil change.  Couldn't find anything about exhaust draw though.

The thing that puts me off buying a CX 5 is the relatively low nose weight.

JVB66 replied on 04/05/2018 08:48

Posted on 04/05/2018 08:34 by EmilysDad

Is a tow car ever bought for its fuel economy? Mine wasn't  ☺

Posted on 04/05/2018 08:48

One thing I have learnt is if you want a decent tow car with (for towing)a reasonable distance between fill ups and decent power is do not get petrolundecided

EmilysDad replied on 04/05/2018 10:09

Posted on 04/05/2018 08:48 by JVB66

One thing I have learnt is if you want a decent tow car with (for towing)a reasonable distance between fill ups and decent power is do not get petrolundecided

Posted on 04/05/2018 10:09

The range on my current diseasal isn't much better than the previous petrol towcar.

TimJim replied on 04/05/2018 11:10

Posted on 04/05/2018 07:41 by

What is meant by 'oil rise' and 'manifold draw'?

Posted on 04/05/2018 11:10

Oil rise is a known issue on vehicles with dpfs....every time the dpf starts  regeneration to remove soot and the like it uses a small amount of diesel to create the burn and overtime dilutes the oil in the sump causing it to rise. In Mazdas case this is due to many incomplete regencycles associated with short journeys . When this occurs due to poor ecu  control the oil rises sufficiently enough to be drawn into the manifold. If ignored the dpf cannot burn off the soot and will require a forced regen by a dealer. If it won't clean its a new and expensive dpf replacement. Not a warranty issue.

Tj

tigerfish replied on 04/05/2018 18:05

Posted on 04/05/2018 18:05

TimJim  Thank you for that clarification, but I'm afraid I'm way out of my comfort Zone with this new technology. Please explain dpf, - My car runs on Diesel with Adblu but is it affected by  such issues? I do try to avoid short journeys anyway.

TF

replied on 04/05/2018 18:55

Posted on 04/05/2018 11:10 by TimJim

Oil rise is a known issue on vehicles with dpfs....every time the dpf starts  regeneration to remove soot and the like it uses a small amount of diesel to create the burn and overtime dilutes the oil in the sump causing it to rise. In Mazdas case this is due to many incomplete regencycles associated with short journeys . When this occurs due to poor ecu  control the oil rises sufficiently enough to be drawn into the manifold. If ignored the dpf cannot burn off the soot and will require a forced regen by a dealer. If it won't clean its a new and expensive dpf replacement. Not a warranty issue.

Tj

Posted on 04/05/2018 18:55

Thanks Tim

lornalou1 replied on 04/05/2018 19:53

Posted on 04/05/2018 11:10 by TimJim

Oil rise is a known issue on vehicles with dpfs....every time the dpf starts  regeneration to remove soot and the like it uses a small amount of diesel to create the burn and overtime dilutes the oil in the sump causing it to rise. In Mazdas case this is due to many incomplete regencycles associated with short journeys . When this occurs due to poor ecu  control the oil rises sufficiently enough to be drawn into the manifold. If ignored the dpf cannot burn off the soot and will require a forced regen by a dealer. If it won't clean its a new and expensive dpf replacement. Not a warranty issue.

Tj

Posted on 04/05/2018 19:53

when the diesel engine is in regeneration mode the car should  not be turned off, so all the extra fuel being injected will burn and not enter the sump via the cylinders. the extra fuel will cause the dpf to run very hot and so burn the soot away ( so they say ) as you may well smell a burning odour coming from under the car. It is also advisable not to park car on very dry grass as could cause a fire due to extra heat from exhaust.

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