Infiniti quitely changing some M45 motors due to high oil consumption

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yidal8
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Infiniti quitely changing some M45 motors due to high oil consumption

Postby yidal8 » Mon Jan 17, 2005 6:09 am

Have been complaining for a while about my 03 with 40Kmi. About 2 qts. every 3Kmi.Dealer said he changed already 'few' motors in the last few months , and Infiniti was more then willing to cover this .He did not know what , if any , changes the new motors have to stop this. I hope they did not de-tune it , or made it softer . I am thinking about doing the swap , but my motor is very strong , even compared to other M's I drove . Would hate to lose her punch .Does any body know about this issue ?


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gniknave
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Re: Infiniti quitely changing some M45 motors due to hig ... (yidal8)

Postby gniknave » Mon Jan 17, 2005 6:39 am

We've done one M45 motor swap at our dealer but mostly because the owner basically dooped Nissan North America into thinking there was a defect in his motor. It was actually the fact he went 30k miles without a single oil change. It's surprising to hear of this since the Q45's use the same motor and I've heard of no problems from them.

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PalmerWMD
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Postby PalmerWMD » Mon Jan 17, 2005 6:42 am

One way modern automakers get better performance with same size engines is looser rings.They equal less friction.

As a result if your center-mass of the design is failry loose ,your statistical outliers might leak.

350Z's, some are leaking too.

If your motor is strong, switch to a grade thicker oil and keep it.

Fred..

PS: Running a thin 30 weight like the Mobil1 30's will exacerbate the problem.

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Jesda
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Re: Infiniti quitely changing some M45 motors due to hig ... (gniknave)

Postby Jesda » Mon Jan 17, 2005 7:02 am

gniknave wrote:It was actually the fact he went 30k miles without a single oil change.
What the hell is wrong with people? Its only $60-$150 a year to maintain $42,000 of hardware.

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elwesso
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Re: Infiniti quitely changing some M45 motors due to hig ... (Jesda)

Postby elwesso » Mon Jan 17, 2005 7:25 am

How could someone treat a brand new M45 like that!!!!

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gniknave
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Postby gniknave » Mon Jan 17, 2005 8:15 am

The funny thing is, he blames the dealer because we charge $80 for an oil change on these things (please don't ask why because I dont know).

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Q451990
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Re: (gniknave)

Postby Q451990 » Mon Jan 17, 2005 9:50 am

gniknave wrote:The funny thing is, he blames the dealer because we charge $80 for an oil change on these things (please don't ask why because I dont know).
Soooo he doesn't realize that other places in town can change the oil? Weird...

Heath

yidal8
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Re: (Q451990)

Postby yidal8 » Mon Jan 17, 2005 10:45 am

Fred , What grade of thicker oil should I try ?I use 5W-30 mineral oil in both the M , the 99 Pathfinder , and my 91 Q . The Q , with 147Kmi. still burns only half as much oil as the M . I normally change every 3500-4000 mi. My service manager have always recommended I should stay with the 5W-30 grade in theV-8's . Something to do with sloshing / aeration of oil in the crankcase, which is shallow design on these engines.

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PalmerWMD
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Postby PalmerWMD » Mon Jan 17, 2005 10:46 am

Try Mobil1 0w-40, or Valvoine SynPower 5w-40.

Fred..

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DAEDALUS
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Postby DAEDALUS » Mon Jan 17, 2005 10:51 am

A thicker oil should be less prone to sloshing around. I think the managers are all but obligated to recommend whatever Infiniti recommends. Their recommendations are based on maximum mileage and horsepower through the warranty period. Your objectives may be slightly different.

yidal88
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Re: (DAEDALUS)

Postby yidal88 » Mon Jan 17, 2005 4:01 pm

So , what do you guys suggest . Should I keep the motor , and add 1-2 qts. between oil changes , or let them put a brand new motor in her .

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rsiwicki
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Re: (yidal88)

Postby rsiwicki » Mon Jan 17, 2005 4:16 pm

let them put in a brand new motor and give your old one to me

don't know what to tell ya unless they warranty the new motor to not do the same using so much oil

Do they extend the manufacturer's warranty period beyond 70K for just the motor part since it is new?

It might be difficult on the resale of the car....(me personally) it would always raise more questions and leave me thinking more than once on purchasing a car that has had the motor replaced even if it was done by the dealer several thousand miles ago but that is just me

I want to know where all these fairly new engines are ending up and woud it be possible to get my hands on one and swap it into my 95 Q....now that would be sweet.


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