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#2572404 - 03/19/12 11:31 AM Royal Purple API synthetic vs Mobil 1 EP
cobrajamie Offline


Registered: 03/16/12
Posts: 2
Loc: South Carolina
My wife and I just purchased a 2012 Buick Enclave with a 3.6l DI engine. I'm getting ready to change out the factory oil after break-in and am trying to decide which oil to use. I've always been a Mobil 1 guy but I noticed the other day that my local Wal-Mart is carrying Royal Purple in addition to Mobil 1. Both the M1 EP and the RP API meet the Dexos 1 requirements that my owners manual specifies. Anyone have any thoughts / experience / recommendations with these oils in a similar application?

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#2572421 - 03/19/12 11:39 AM Re: Royal Purple API synthetic vs Mobil 1 EP [Re: cobrajamie]
HerrStig Offline


Registered: 08/24/11
Posts: 3137
Loc: Boston, MA
I suspect the engine will outlast the body and tranny with EITHER oil.

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#2572431 - 03/19/12 11:42 AM Re: Royal Purple API synthetic vs Mobil 1 EP [Re: HerrStig]
2James1 Offline


Registered: 10/19/11
Posts: 384
Loc: Union County, PA
Originally Posted By: HerrStig
I suspect the engine will outlast the body and tranny with EITHER oil.


+1 I personally think RP is overpriced tho.
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2005 Chevrolet Malibu V6
Mobil 1 HM 5w-30/ Purolator Classic oil filter

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#2572457 - 03/19/12 11:59 AM Re: Royal Purple API synthetic vs Mobil 1 EP [Re: 2James1]
Capa Offline


Registered: 01/04/10
Posts: 1215
Loc: Oklahoma
Originally Posted By: 2James1
Originally Posted By: HerrStig
I suspect the engine will outlast the body and tranny with EITHER oil.


+1 I personally think RP is overpriced tho.


+2

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#2572466 - 03/19/12 12:06 PM Re: Royal Purple API synthetic vs Mobil 1 EP [Re: cobrajamie]
lexus114 Offline


Registered: 05/12/08
Posts: 6018
Loc: Easton, PA
I used the RP in the past. I have not used the recent stuff though. And I have to agree as well that it just plain costs too much. Like op mentioned above ^^ the motor will out last the rest of the vehicle on Mobil-1 or RP anyway.
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#2572472 - 03/19/12 12:08 PM Re: Royal Purple API synthetic vs Mobil 1 EP [Re: cobrajamie]
DrDusty86 Offline


Registered: 01/04/11
Posts: 1491
Loc: TX
Mobil 1 shows high iron in UOAs= engine wear. Mobil 1 is [censored]. You get what you pay for.

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#2572478 - 03/19/12 12:09 PM Re: Royal Purple API synthetic vs Mobil 1 EP [Re: DrDusty86]
lexus114 Offline


Registered: 05/12/08
Posts: 6018
Loc: Easton, PA
Originally Posted By: DrDusty86
Mobil 1 shows high iron in UOAs= engine wear. Mobil 1 is [censored]. You get what you pay for.



Oh boy....I`m leavin. popcorn
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#2572483 - 03/19/12 12:14 PM Re: Royal Purple API synthetic vs Mobil 1 EP [Re: cobrajamie]
jaj Online   content


Registered: 08/21/03
Posts: 893
Loc: Vancouver, Canada
Originally Posted By: cobrajamie
My wife and I just purchased a 2012 Buick Enclave with a 3.6l DI engine. I'm getting ready to change out the factory oil after break-in and am trying to decide which oil to use. I've always been a Mobil 1 guy but I noticed the other day that my local Wal-Mart is carrying Royal Purple in addition to Mobil 1. Both the M1 EP and the RP API meet the Dexos 1 requirements that my owners manual specifies. Anyone have any thoughts / experience / recommendations with these oils in a similar application?


I can't find Royal Purple on the GM Dexos1 approved list - are you sure they meet the Dexos standard? If RP doesn't, then it would be sensible to stay with an oil that does, and M1 EP 5w-30 is on the GM list.

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#2572504 - 03/19/12 12:31 PM Re: Royal Purple API synthetic vs Mobil 1 EP [Re: DrDusty86]
volk06 Offline


Registered: 10/04/10
Posts: 4335
Loc: Iowa
Originally Posted By: DrDusty86
Mobil 1 shows high iron in UOAs= engine wear. Mobil 1 is [censored]. You get what you pay for.


So does some RP and Redline uoas, 2 boutique $$ oils. What's your point here?

popcorn2


Edited by volk06 (03/19/12 12:38 PM)
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#2572511 - 03/19/12 12:36 PM Re: Royal Purple API synthetic vs Mobil 1 EP [Re: DrDusty86]
Rand Offline


Registered: 08/20/03
Posts: 8024
Loc: Barberton,Ohio
Originally Posted By: DrDusty86
Mobil 1 shows high iron in UOAs= engine wear. Mobil 1 is [censored]. You get what you pay for.

nothing to see here^^^^^^^^^^ just somebody
trolling trolling trolling trolling
trolling trolling trolling trolling


Edited by Rand (03/19/12 12:37 PM)
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#2572534 - 03/19/12 01:00 PM Re: Royal Purple API synthetic vs Mobil 1 EP [Re: jaj]
cobrajamie Offline


Registered: 03/16/12
Posts: 2
Loc: South Carolina
jaj,

According to the RP website and the label on the bottle, their 5W30 API-Licensed oil meets Dexos. GM may just be behind on updating the list.

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#2572563 - 03/19/12 01:23 PM Re: Royal Purple API synthetic vs Mobil 1 EP [Re: cobrajamie]
ARCOgraphite Offline


Registered: 05/17/09
Posts: 8658
Loc: N.H, U.S.A.
"Meets DEXOS" does not mean a Licensed Dexos Product. IIRC GM allows API SN oil to be used if DEXOS cannot be sourced. How 'bout SHELL ULTRA 5w30? Arguing about the quality of ILSAC oil is like arguing about whats a better beer, Budweiser or COORS. At least I didnt say Carling Black Label vs. Piels smile
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#2572578 - 03/19/12 01:42 PM Re: Royal Purple API synthetic vs Mobil 1 EP [Re: cobrajamie]
DrDusty86 Offline


Registered: 01/04/11
Posts: 1491
Loc: TX
I just don't see why people RAVE over M1 when there are clearerly better oils.
M1 was run in my buddy's 4.6 F150 for years. After changing to RP and doing a UOA the wear dropped by a 1/3.

[censored], Use PP, or Valvoline Synpower, if it's price you are worried about.

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#2572590 - 03/19/12 01:55 PM Re: Royal Purple API synthetic vs Mobil 1 EP [Re: cobrajamie]
yesthatsteve Offline


Registered: 06/27/11
Posts: 546
Loc: Kansas City, MO
M1EP is overkill if you plan to use the OLM, and under warranty, I would.

QSUD is on the Dexos 1 list, cheaper than M1EP or RP, and will protect well if changed according to the OLM.

Throw in this month's $20 rebate for 5 quarts, and it's full of win.
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'05 Scion xB, 160000+ miles
'11 Accord I4 Sedan, 45000+ miles

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#2572617 - 03/19/12 02:27 PM Re: Royal Purple API synthetic vs Mobil 1 EP [Re: ARCOgraphite]
fxrider Offline


Registered: 06/09/09
Posts: 866
Loc: Wyoming
Mobil-1 is overpriced but its a good oil. Redline, Royal purple, Amsoil & Motul are all better imho. Motul has some good Ester based oils too cool

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