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#4537341 - 10/08/17 05:11 PM SUV Starting To Use Oil
RHALL Offline


Registered: 08/24/16
Posts: 34
Loc: N.C.
My wifeís 2004 Trailblazer is starting to use around a quart of oil between changes. Itís got 200,000 miles on its 4.2 liter I-6, so I guess itís been a good one.
What Iím considering is using heavier weight oil than the 5w 30 itís always used, and would like some advice on what to use. Iíve thought about 10w 30 or 10w 40 to slow down the oil use. What do yíall think?


Edited by RHALL (10/08/17 05:16 PM)
_________________________
"Stupid Is As Stupid Does"- Forrest Gump

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#4537346 - 10/08/17 05:13 PM Re: SUV Starting To Use Oil [Re: RHALL]
eljefino Offline


Registered: 06/15/03
Posts: 32632
Loc: ME
ok

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#4537359 - 10/08/17 05:27 PM Re: SUV Starting To Use Oil [Re: RHALL]
Kool1 Offline


Registered: 01/25/13
Posts: 906
Loc: California
I believe carbon buildup around the top of the pistons and ring lands causes ring seating problems with higher mileage engines. You may want to try some Seafoam in your intake to clean out your combustion chambers to free up stuck rings (if they are stuck) before you up the oil viscosity.

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#4537360 - 10/08/17 05:27 PM Re: SUV Starting To Use Oil [Re: RHALL]
Oil_Flunky Offline


Registered: 06/23/09
Posts: 96
Loc: Michigan
Try a bottle of Rislone concentrate in it.
_________________________
Oil, you need it. Oil snobbery, you don't need it.

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#4537370 - 10/08/17 05:44 PM Re: SUV Starting To Use Oil [Re: RHALL]
chemman Offline


Registered: 02/19/07
Posts: 70
Loc: Maryland
What is your oil change interval?
_________________________
92 Olds 88 Hav 5w30 PL/L24011
99 Buick Century Hav 5w30 PL/L24011
99 Silverado 5.3L Hav 5w30 PL/L25288
04 TrailBlazer 4.2L Hav 5w30 PL/L25288

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#4537378 - 10/08/17 05:59 PM Re: SUV Starting To Use Oil [Re: RHALL]
PimTac Offline


Registered: 03/04/17
Posts: 4258
Loc: Soviet State of Washington
This just started? Check for leaks.
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#4537392 - 10/08/17 06:16 PM Re: SUV Starting To Use Oil [Re: RHALL]
Jimzz Offline


Registered: 10/03/14
Posts: 1142
Loc: NoVA
Clean out the throttle body, intake, and PCV lines with some carb cleaner. After that I would use a high mileage 10w30. I am surprised you have not used more oil sooner. Those larger inline GM motors seemed to use a little oil not to long after new.
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yup

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#4537396 - 10/08/17 06:29 PM Re: SUV Starting To Use Oil [Re: RHALL]
Warstud Offline


Registered: 09/02/05
Posts: 5393
Loc: MIchigan
Try some Castrol Magnatec Blend 10w30 and Liqui Moly anti-friction engine treatment.

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#4537397 - 10/08/17 06:29 PM Re: SUV Starting To Use Oil [Re: RHALL]
Oro_O Offline


Registered: 09/20/14
Posts: 1351
Loc: Seattle-ish, WA
Addressing ring issues has greatly helped consumption in an suv I have. I soaked the rings with MMO.

I use M1 10w-30 HM and that Helps a lot too. Until the end of the month, it is on a $10 a jug rebate. That makes it under $13 for 5 quarts at Walmart. Give that a try.

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#4537405 - 10/08/17 06:43 PM Re: SUV Starting To Use Oil [Re: RHALL]
FZ1 Offline


Registered: 02/07/08
Posts: 4727
Loc: Texas
The quart usage is not going to hurt it. First try a thicker 5w-30 or a 5w-30 high mileage oil before going up a grade.

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#4537413 - 10/08/17 06:51 PM Re: SUV Starting To Use Oil [Re: RHALL]
demarpaint Offline


Registered: 07/03/05
Posts: 29751
Loc: NY
If there aren't any leaks, I'd replace the PCV valve and see if that helps. Then maybe give Kreen, MMO, or Rislone a shot.
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#4537416 - 10/08/17 06:53 PM Re: SUV Starting To Use Oil [Re: PimTac]
Gebo Offline


Registered: 09/18/02
Posts: 2080
Loc: VA
Originally Posted By: PimTac
This just started? Check for leaks.


+1

Are you a maintenance freak or a regular guy?

On my GS300 and my 4Runner they both had leaks and that was the culprit.
_________________________
'98 LEX LS400 280K
'00 LEX GS300 195K
'02 4Runner 225K
'05 Lex LS430 85K
'06 Toyota Highlander 145K
'09 Lex IS350 85K


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#4537423 - 10/08/17 07:01 PM Re: SUV Starting To Use Oil [Re: chemman]
RHALL Offline


Registered: 08/24/16
Posts: 34
Loc: N.C.
Originally Posted By: chemman
What is your oil change interval?

5000 Miles, Iíve always used synthetic oil and a quality filter.
_________________________
"Stupid Is As Stupid Does"- Forrest Gump

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#4537427 - 10/08/17 07:05 PM Re: SUV Starting To Use Oil [Re: RHALL]
danez_yoda Online   content


Registered: 07/18/09
Posts: 464
Loc: texas
Put some flexseal in there. It will stop the leak. LOL!

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#4537430 - 10/08/17 07:06 PM Re: SUV Starting To Use Oil [Re: RHALL]
bmod305 Offline


Registered: 06/23/08
Posts: 265
Loc: Minnesota
200k on the clock and using 1 quart every 5k. What are you worried about? Keep using whatever you have been using.

Just my two cents,

Dave

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