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#4555741 - 10/26/17 10:46 PM Must an added quart be same as what's in engine ?
LittleErnie Offline


Registered: 10/23/17
Posts: 1
Loc: Texas
My 2007 Passat uses a quart every 1200 miles. In it currently is 5W40 synthetic.
Does the next quart have to be the same, ie could I add 5W30 or SemiSynthetic
or even non-synthetic. Why not the cheaper as it's just burning it up ?

I'm disappointed as the engine has only 115k miles. The Service Adviser
gave no clear explanation as to why. Said something about the turbocharger.

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#4555757 - 10/26/17 10:59 PM Re: Must an added quart be same as what's in engine ? [Re: LittleErnie]
andyd Offline


Registered: 09/25/04
Posts: 7139
Loc: Marshfield , MA
I would try a decent 10w30
_________________________
'16 Camry LE STP synth 0w20 and STP filter. the Fridge

1994 Ranger ,the Rat, 5w30 dino, STP filter

'16 Camry SE, Valvoline HM 0w20 and OEM filter
Thick oil is better grin2

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#4555761 - 10/26/17 11:03 PM Re: Must an added quart be same as what's in engine ? [Re: LittleErnie]
dishdude Online   content


Registered: 11/14/08
Posts: 8736
Loc: Phoenix
You can add anything that meets the manufacturer specs, probably 505.01
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#4555765 - 10/26/17 11:06 PM Re: Must an added quart be same as what's in engine ? [Re: LittleErnie]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: Waco, TX
Q: "Must an added quart be same as what's in engine?"

A: No, not at all. Just make sure the oil added meets specs for the engine.
_________________________
"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

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#4555776 - 10/26/17 11:18 PM Re: Must an added quart be same as what's in engine ? [Re: LittleErnie]
Merkava_4 Offline


Registered: 01/30/07
Posts: 17501
Loc: Clovis, CA
To get the full benefit out of the primary oil, the added oil should be the same.

For example: If the primary oil is high mileage oil and you go and add a quart of the regular version of that same oil, you just now diluted all the special additives of the primary oil.

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#4555777 - 10/26/17 11:18 PM Re: Must an added quart be same as what's in engine ? [Re: LittleErnie]
rooflessVW Offline


Registered: 12/24/11
Posts: 4040
Loc: North Carolina
I would keep it topped up with something like GTX 10W-40.

Your consumption isn't too far from "normal"... But the engine may need a re-ring.
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"Zed's dead baby, Zed's dead."

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#4555798 - 10/26/17 11:52 PM Re: Must an added quart be same as what's in engine ? [Re: LittleErnie]
Panzerman Offline


Registered: 12/16/06
Posts: 4203
Loc: Port Orange, Florida
I'd keep a gallon of Super tech 15w40 for topping it off.
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2006 Dodge Ram 2500 Hemi 4x4
2016 Dodge Challenger Scat Pack

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#4555799 - 10/26/17 11:53 PM Re: Must an added quart be same as what's in engine ? [Re: LittleErnie]
901Memphis Offline


Registered: 08/14/10
Posts: 12893
Loc: Northern Kentucky
I would probably just stick with the proper spec oil but buy 5 quart jugs to save money. At that high rate of consumption you'll only need to change the filter and drain the pan every 3rd scheduled oil change I'd say.
_________________________
2012 Chevy Cruze LT 1.4T - 50k
2002 Buick Century 130k - Built 4T65e(Maxlife) - Edge 0w40 + Fram XG3980

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#4555802 - 10/26/17 11:55 PM Re: Must an added quart be same as what's in engine ? [Re: LittleErnie]
Johnny2Bad Offline


Registered: 05/20/13
Posts: 1810
Loc: Saskatchewan, Canada
No.
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'57 FL Straight 50 wt
'90 Miata 1.8L w/Rotrex Supercharger [Mobil1 0W-40]
'96 Ram 1500 [3.7L Mobil1 0W-20 / 1L 15W-50]
'01 PT Cruiser [Mobil1 0W-40]

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#4555806 - 10/27/17 12:00 AM Re: Must an added quart be same as what's in engine ? [Re: LittleErnie]
BrocLuno Online   content


Registered: 09/06/15
Posts: 5512
Loc: Kalifornia Kollective
No laugh
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Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.

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#4555822 - 10/27/17 12:47 AM Re: Must an added quart be same as what's in engine ? [Re: LittleErnie]
askani79705 Offline


Registered: 06/10/06
Posts: 412
Loc: midland tx
Did you change pcv valves ? Neighbor down the street issues with his using copius amounts of oil
_________________________
2017 Ford F150 NAPA syn 5w30 Fram 11955.
2000 Chevy 2500 Silverado PYB 5w30 AC Delco Filter

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#4555845 - 10/27/17 02:39 AM Re: Must an added quart be same as what's in engine ? [Re: LittleErnie]
danez_yoda Offline


Registered: 07/18/09
Posts: 464
Loc: texas
are you running a high mileage oil like Maxlife?

Over time it should stem the effects of oil burning by cleaning some deposits from the rings and allowing them to float again. Also check the NOAK of the oil you are using to see if it is getting hot and evaporating off. That is all the buzz about low NOAK oils.

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#4555863 - 10/27/17 04:48 AM Re: Must an added quart be same as what's in engine ? [Re: LittleErnie]
dlundblad Online   happy


Registered: 09/30/13
Posts: 10017
Loc: Indiana
The PCV as Askani mentioned is a place to start.

If money is an issue, Mobil 1 has a rebate right now.

If you do want to use a different oil, I would try to find a 10w40.
_________________________
03 Jeep WJ 4.0 199k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 177k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 145k Rotella T5 10w30 Fram TG3980


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#4555934 - 10/27/17 06:40 AM Re: Must an added quart be same as what's in engine ? [Re: dlundblad]
Kira Online   content


Registered: 08/19/10
Posts: 5226
Loc: Champlain/Hudson Valley
To Little Ernie: Do you do your own oil changes? If you do, trying one of the suggested oils would be no big deal.

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#4556056 - 10/27/17 09:22 AM Re: Must an added quart be same as what's in engine ? [Re: LittleErnie]
Ducked Online   content


Registered: 10/25/12
Posts: 4338
Loc: Taiwan
No. An added quart is usually cleaner.

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