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#3430279 - 07/20/14 02:33 PM Anyone using Dexos in an older car?
Warstud Offline


Registered: 09/02/05
Posts: 3818
Loc: MIchigan
Not much talk about Dexos here but was wondering if anyone uses it in an older vehicle. If so...do you notice any difference?

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#3430294 - 07/20/14 02:51 PM Re: Anyone using Dexos in an older car? [Re: Warstud]
mrsilv04 Offline


Registered: 12/08/06
Posts: 7620
Loc: Illinois
Define "older"...?

I'm using the dexos approved Pennzoil Synthetic Blend (5w-30) in a 2004 Silverado, with 82000 miles on it... and in a 2003 Ford V-10 with 36000 miles on it.

It does exactly what oil is supposed to do in both.
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Whatever you do... do NOT speed through the town of Gauley Bridge, WV.

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#3430297 - 07/20/14 02:52 PM Re: Anyone using Dexos in an older car? [Re: Warstud]
sciphi Offline


Registered: 03/24/07
Posts: 9424
Loc: Upstate NY
Older by time or mileage? My Cruze at 89k miles/almost 3 years old hasn't seen any difference running a dexos1 oil from day 1.
_________________________
2009 Honda Fit Sport
2012 Chevrolet Cruze Eco

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#3430305 - 07/20/14 03:05 PM Re: Anyone using Dexos in an older car? [Re: mrsilv04]
Warstud Offline


Registered: 09/02/05
Posts: 3818
Loc: MIchigan
Originally Posted By: mrsilv04
Define "older"...?

I'm using the dexos approved Pennzoil Synthetic Blend (5w-30) in a 2004 Silverado, with 82000 miles on it... and in a 2003 Ford V-10 with 36000 miles on it.

It does exactly what oil is supposed to do in both.


How about 2005 and older. I was looking for: runs better, quieter etc.

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#3430315 - 07/20/14 03:16 PM Re: Anyone using Dexos in an older car? [Re: Warstud]
beast3300 Offline


Registered: 12/24/09
Posts: 3119
Loc: Ohio
Yes, see my Sig.
_________________________
'03 Regal GS L67 3.29 GR:, PUP 5w30/TG3980, Filtermag

'99 Grand Prix L36: QS Defy 5w30/TG3387A, Filtermag


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#3430319 - 07/20/14 03:19 PM Re: Anyone using Dexos in an older car? [Re: Warstud]
Nate1979 Offline


Registered: 04/08/13
Posts: 2548
Loc: Portland, OR
Dexos is a spec. Considering almost all synthetics and some blends meet the spec then yes millions of cars on the road are running Dexos spec oil.
_________________________
2015 GMC Sierra 2500 6.0L Factory fill
2010 Subaru Forester 2.5X QSUD 5w-30 w/ Fram Ultra

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#3430326 - 07/20/14 03:33 PM Re: Anyone using Dexos in an older car? [Re: Warstud]
Impala2011 Offline


Registered: 07/01/14
Posts: 5
Loc: IL
may be highjacking this thread but ... can anyone explain just why GM now requires dexos spec oil???
recently bought a 2011 Impala with 3.5L LZE that owners manual says needs dexos1.
of course the 3.5L has been in production for a number of years ... and I am sure a 2010 or earlier 3.5L is no different than my 2011 3.5L so why the new "mandate" from GM???

FWIW ... haven't yet changed out the dealer installed unknown oil but will do so soon as OLI is at ~ 43% ... QSGB is probably what will end up in the crank case

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#3430348 - 07/20/14 04:01 PM Re: Anyone using Dexos in an older car? [Re: Impala2011]
beast3300 Offline


Registered: 12/24/09
Posts: 3119
Loc: Ohio
Originally Posted By: Impala2011
may be highjacking this thread but ... can anyone explain just why GM now requires dexos spec oil???
recently bought a 2011 Impala with 3.5L LZE that owners manual says needs dexos1.
of course the 3.5L has been in production for a number of years ... and I am sure a 2010 or earlier 3.5L is no different than my 2011 3.5L so why the new "mandate" from GM???

FWIW ... haven't yet changed out the dealer installed unknown oil but will do so soon as OLI is at ~ 43% ... QSGB is probably what will end up in the crank case



Probably to attempt for their consumers to use a better motor oil than Lubestation 3000XL brand from the place offering $16.99 changes. I'm sure people are still running the OLM down to 0% on sub par oil and filters.
_________________________
'03 Regal GS L67 3.29 GR:, PUP 5w30/TG3980, Filtermag

'99 Grand Prix L36: QS Defy 5w30/TG3387A, Filtermag


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#3430391 - 07/20/14 04:59 PM Re: Anyone using Dexos in an older car? [Re: Impala2011]
sciphi Offline


Registered: 03/24/07
Posts: 9424
Loc: Upstate NY
Originally Posted By: Impala2011
may be highjacking this thread but ... can anyone explain just why GM now requires dexos spec oil???


All their DI and/or turbocharged engines needed a stouter oil to deal with the demands of the engine. Those new engines are pretty hard on oil, and need it changed by the time the OLM says to. If not before.
_________________________
2009 Honda Fit Sport
2012 Chevrolet Cruze Eco

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#3430439 - 07/20/14 05:50 PM Re: Anyone using Dexos in an older car? [Re: Warstud]
JC1 Online   content


Registered: 11/29/08
Posts: 1164
Loc: Oshawa, Ontario Canada
Originally Posted By: Warstud
Originally Posted By: mrsilv04
Define "older"...?

I'm using the dexos approved Pennzoil Synthetic Blend (5w-30) in a 2004 Silverado, with 82000 miles on it... and in a 2003 Ford V-10 with 36000 miles on it.

It does exactly what oil is supposed to do in both.


How about 2005 and older. I was looking for: runs better, quieter etc.

I'm using Pennzoil Platinum 5W-30 in my 1998 Toyota Sienna. It does run noticeably quieter since I've switched over to the oil (she's got over 164,xxx miles or 266,xxx km).

I can't say that the van is running better, since I'm a BITOGER so I do make sure it gets the attention it needs.

Regards, JC.

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#3430696 - 07/20/14 09:27 PM Re: Anyone using Dexos in an older car? [Re: Warstud]
Rosetta Offline


Registered: 07/06/14
Posts: 211
Loc: Sta Catarina, Br
I've used Original GM 5w30 synthetic Dexos1 (made by Cosan that makes also Mobil 1 in here, so I figure if this is M1 actually) in my cars. My Subaru with 122k miles doesn't like any 5w30 anymore, or I don't like the way it sounds with any 5w30 when at op temps. In the Taurus, is fine, no weird sounds at all (good old Vulcan). I'm still on GM Leget in the Taurus, it just uses a little more oil than with M1 15w50 at road speeds, because of the lower viscosity (they are both M1 syn in my opinion, but Cosan didn't answered my question if they are the same oil for cost production reasons). City driving isn't giving greater consumption, just at highway long trips (470 miles straight).
_________________________
1995 Ford Taurus 3.0 Vulcan 78k miles Mobil 1 5w30
1993 Subaru Impreza EJ16 121k miles Mobil 1 15w50
1997 Kawasaki Ninja ZX9R 38k miles Mobil 1 15w50

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