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#4486913 - 08/12/17 10:06 PM 2001 Infiniti QX4, 151k. Burning oil like crazy!
Legend11 Offline


Registered: 08/13/14
Posts: 18
Loc: Denver
I've actually been dealing with this problem since I bought the truck in 2014 at 125k. I should have known better when the car was 1 quart low during the test drive. Anyway, I was unsure of the history of the truck and consistently have been using 5w30 High Mileage Mobile 1 since I bought it. The truck has been burning a quart every 1000-1500 miles which is driving me crazy! Sometimes I forget to check it and it is close to 1.5 quarts low! Never had any oil lights and it always starts up (have been dealing with a loud timing chain rattle since purchase though). For the first time since purchase, I switched to 10w30 Mobile 1 High Mileage when I changed the oil today; I'm beginning to wonder if I should give up with the Mobil 1 synthetic and go with conventional. I've been trying to be patient, but there is obviously some issue going on with my truck; I feel like I have to check the oil every time I drive it!

Any ideas? Thank you!
_________________________
Currently maintaining...
01 Infiniti QX4,129k
90 Honda Civic,251k (To be sold)
91 Honda Civic,125k
GF:13 Nissan Sentra,20k
Dad:01 Infiniti QX4,160k

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#4486926 - 08/12/17 10:25 PM Re: 2001 Infiniti QX4, 151k. Burning oil like crazy! [Re: Legend11]
Triton_330 Offline


Registered: 12/24/13
Posts: 780
Loc: Illinois, USA
If the reason you're wanting to change back to running a conventional rather than synthetic is because you are wanting to save money, I agree and think you should. Also, burning a quart every 1,000 miles may soon lead to catalyst failure, so you might want to have someone look at your catalytic converter for signs of clogging. (It might be a good idea to actually do a cat-delete, but keep your muffler in case cops in your area are the kind to actually care about that kind of thing - mind you this is a last resort option).

My advice would be:
1. check your PCV (if you have one)
2. run a compression test (if you can find the resources to do it)
3. check your spark plugs for signs of gunk that could lead to possible fouling
4. stock up on dirt cheap (but API certified) oil for top ups
5. run 2 fuel system cleaners through your gas, one being any additive with PEA, and the other being Berryman B12
_________________________
2001 Ford F-150 XLT 4x4 5.4L V8 ~132k miles
-> PPHM 5w-20 w/Fram Ultra
1989 Chevrolet Camaro RS 5.0L TBI V8 ~48k miles
-> Milesyn SB 5w-30 w/Puro Boss

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#4486976 - 08/13/17 12:23 AM Re: 2001 Infiniti QX4, 151k. Burning oil like crazy! [Re: Triton_330]
Legend11 Offline


Registered: 08/13/14
Posts: 18
Loc: Denver
I changed the PCV valve and spark plugs last year and don't recall anything that jumped out at me. I will run the fuel cleaners and report back. If I were to switch to conventional, is it reasonable to expect any improvement on consumption? Not sure if anyone has any positive results just by switching.

Thanks,
_________________________
Currently maintaining...
01 Infiniti QX4,129k
90 Honda Civic,251k (To be sold)
91 Honda Civic,125k
GF:13 Nissan Sentra,20k
Dad:01 Infiniti QX4,160k

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#4486989 - 08/13/17 01:14 AM Re: 2001 Infiniti QX4, 151k. Burning oil like crazy! [Re: Legend11]
L_Sludger Offline


Registered: 10/04/09
Posts: 3947
Loc: Ohio
Looks like you have the first iteration of the famous Nissan VQ35DE motor. Do the PCV valve again, and how about some Valvoline Maxlife motor oil next time? Good luck! Let us know.
_________________________
too many cars and oil combinations to list in 150 characters or less

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#4487004 - 08/13/17 01:33 AM Re: 2001 Infiniti QX4, 151k. Burning oil like crazy! [Re: L_Sludger]
Legend11 Offline


Registered: 08/13/14
Posts: 18
Loc: Denver
The PCV vale was pain to get to. I had to remove the upper intake manifold which requires a replacement gasket! :-/ . any additives that could help? Any recommended oil viscosity? My truck's manual recommends 5w30. Thank you
_________________________
Currently maintaining...
01 Infiniti QX4,129k
90 Honda Civic,251k (To be sold)
91 Honda Civic,125k
GF:13 Nissan Sentra,20k
Dad:01 Infiniti QX4,160k

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#4487014 - 08/13/17 02:03 AM Re: 2001 Infiniti QX4, 151k. Burning oil like crazy! [Re: Legend11]
PimTac Online   content


Registered: 03/04/17
Posts: 2336
Loc: Soviet State of Washington
The suggestion to use Valvoline Maxlife is a good one. Use the 5w-30 as noted in your owners manual.
_________________________
2017 Mazda CX-5 GT. Idemitsu 0w-20 factory fill. Factory Denso filter.

“This is the West, sir. When the legend becomes fact..print the legend.”

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#4487031 - 08/13/17 03:31 AM Re: 2001 Infiniti QX4, 151k. Burning oil like crazy! [Re: Legend11]
L_Sludger Offline


Registered: 10/04/09
Posts: 3947
Loc: Ohio
Originally Posted By: Legend11
The PCV vale was pain to get to. I had to remove the upper intake manifold which requires a replacement gasket! :-/ . any additives that could help? Any recommended oil viscosity? My truck's manual recommends 5w30. Thank you

Factory viscosity 5w30 is what you should start with, my good man. Do you have any easy way of accessing one end of the hose that the PCV connects to? You could spray fog in some degreaser to unstick the valve if its stuck.
_________________________
too many cars and oil combinations to list in 150 characters or less

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#4487048 - 08/13/17 05:15 AM Re: 2001 Infiniti QX4, 151k. Burning oil like crazy! [Re: Legend11]
Kuato Offline


Registered: 10/23/05
Posts: 7094
Loc: Colorado
I have seen some posts on here where engines burn Mobil 1 like crazy, and burned a lot less with other oils. If Plan A is not working for you, switch to Plan B; I agree with the strategy of changing to a different oil and Valvoline Maxlife is a good choice. I also agree with moving up in viscosity to 10W-30 or perhaps even a 10w40.

Or more simply - while you're waiting for your gas tank to fill open the hood, check oil, top off. It's not that hard.


Edited by Kuato (08/13/17 05:17 AM)
Edit Reason: Common sense
_________________________
Oil condition is speculation until a UOA is performed.

2013 F150 5.0 4x4 SuperCab 63k Amsoil/Amsoil

Thick vs Thin test: 12k / 43k miles complete

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#4487054 - 08/13/17 05:59 AM Re: 2001 Infiniti QX4, 151k. Burning oil like crazy! [Re: Legend11]
KL31 Offline


Registered: 06/03/16
Posts: 511
Loc: South OZ
Hey Kuato, 10W30 moving up in viscosity? It's still in the 30 grade region. Some 5W30 A3/B4 euro oils will also be thicker than any 10W30 "resource conserving" oils.

I'd go with a higher viscosity. It's not going to hurt anything as the oil is getting used up somehow anyways. If in hot weather, go with very cheap 15W40 or 10W40. If you need some cold start performance, 5W40. If you live in super freezing conditions, 0W40. Either way, I'd ditch the 5W30 as most are "resource conserving" ie; the thin side of 30 grade. See if it helps at all.

Compression test is a good idea but it can still have good compression and have oil leaking past.
_________________________
1995 MX-3 - KLZE swapped
Shell Helix Ultra 5W40
Wix 51356

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#4487071 - 08/13/17 06:29 AM Re: 2001 Infiniti QX4, 151k. Burning oil like crazy! [Re: Legend11]
ARB1977 Offline


Registered: 06/12/05
Posts: 4997
Loc: North Texas
Try some Motor oil saver from LM. Add it to your oil.
_________________________
2015 Tacoma 4.0L 52K (as of 8-17-17)
M1 EP 5W30 & BioTech / Toyota filter

2008 CRV 2.4L 172K (as of 12-18-17)
Maxlife 5W20 / M1 filter

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#4487214 - 08/13/17 10:47 AM Re: 2001 Infiniti QX4, 151k. Burning oil like crazy! [Re: ARB1977]
SatinSilver Offline


Registered: 01/24/08
Posts: 9093
Loc: Ohio
Yes, Gumout Regane High Mileage or Chevron Techron at Walmart for around $5. The B12 Chemtool also at WM for $4. Both of those prices include tax, so that's the out the door price. smile
_________________________
2012 Toyota Camry 71k-PUP 5w20,OEM filter, RT43s.
2005 Toyota Matrix 135k miles - VWB 5w30 conv, Valvoline oil filter. Nokian eNTYRES.

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#4487257 - 08/13/17 11:37 AM Re: 2001 Infiniti QX4, 151k. Burning oil like crazy! [Re: Legend11]
bigj_16 Offline


Registered: 07/03/17
Posts: 1134
Loc: CO
I wondered where all that smoke was coming from when I drive to school wink

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#4487259 - 08/13/17 11:38 AM Re: 2001 Infiniti QX4, 151k. Burning oil like crazy! [Re: Legend11]
Legend11 Offline


Registered: 08/13/14
Posts: 18
Loc: Denver
I've always heard great things about Mobile 1 and it's probably the only reason I've stuck with it. I have not heard anything about Valvoline MaxLife 5w30; is there something unique about that oil that will help over the Mobile 1 I'm currently using? I will give it a try next change.

I will also pickup some fuel cleaner (b12 chemtool, gumout regane high mileage, or chevron techron). How does the Lucas fuel cleaner rank with these? I believe I have a bottle in the garage. Just curious what the fuel cleaner does to prevent the oil from burning.

Also, I've primarily put 85 octane in my truck. Since I live in Denver with the higher altitude, the owner's manual points out no added benefit to using the higher octane 91.


Edited by Legend11 (08/13/17 11:38 AM)
_________________________
Currently maintaining...
01 Infiniti QX4,129k
90 Honda Civic,251k (To be sold)
91 Honda Civic,125k
GF:13 Nissan Sentra,20k
Dad:01 Infiniti QX4,160k

Top
#4487262 - 08/13/17 11:41 AM Re: 2001 Infiniti QX4, 151k. Burning oil like crazy! [Re: Legend11]
bigj_16 Offline


Registered: 07/03/17
Posts: 1134
Loc: CO
All kidding aside, I would run a inexpensive diesel 15W-40 until it starts getting cold in November, and then maybe a diesel 10W-30. In all honesty, with out knowing more about it, it is probably on its way out. Run it as inexpensively as possible until then. When is your next emissions check due?

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#4487272 - 08/13/17 12:07 PM Re: 2001 Infiniti QX4, 151k. Burning oil like crazy! [Re: Legend11]
SilverFusion2010 Offline


Registered: 06/29/11
Posts: 1336
Loc: Crawfordville FL
The M1 HM 10w30 is an HTHS 3.5 which is a very thick 30.

Running some kreen or some BG109 in the oil to free up any potential stuck oil rings is something I would try. If that doesn't work I'd start running a 10w40 maxlife in the red bottle.
_________________________
2010 Ford Fusion SE 3.0L V6, 173k miles M1 AFE 0w-20

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