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O Reilly motor oil #5078696 04/18/19 09:59 AM
Joined: Sep 2010
Posts: 21
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porvdub Offline OP
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Joined: Sep 2010
Posts: 21
How good or bad is O Reilly 10w 30 regular motor oil as sold in the 5 qt black bottles? ok for a jeep 4 liter inline motor in a 1990 XJ?

Re: O Reilly motor oil [Re: porvdub] #5078711 04/18/19 10:14 AM
Joined: May 2010
Posts: 2,459
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RamFan Offline
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Posts: 2,459
Yes it's ok for your Jeep.


18 Giulia Ti Sport Q4
  • 2.0T I4 - 19k - PP Euro LX 0w30 - PureOne - 10k/1yr

16.5 CX-5 Touring AWD
  • 2.5L I4 - 65k - Castrol Edge EP 0w20 - Denso - 7.5k/1yr
Re: O Reilly motor oil [Re: porvdub] #5078726 04/18/19 10:29 AM
Joined: Dec 2017
Posts: 2,936
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JLTD Offline
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Joined: Dec 2017
Posts: 2,936
Decent oil, 10w-30 is great for the 4.0. OCI determined through UOA, or manual if that's how you roll.


I use the overseas manual to choose my viscosity.

Using AMSOIL

Hers: 2008 Jeep Liberty 154k, SS 5w30/Amsoil

His: 2015 4Runner 60k, SS 5w20/Amsoil

Re: O Reilly motor oil [Re: porvdub] #5078760 04/18/19 11:07 AM
Joined: Jun 2003
Posts: 19,757
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Chris142 Offline
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Joined: Jun 2003
Posts: 19,757
Made by omni.

Last edited by Chris142; 04/18/19 11:07 AM.

02 Wrangler Napa high milage 10w40
87 F250 Valvoline 15w40
07 fjcruiser Car lube plus 10w30
Z400 castrol T 10w40
Can am Maveric edge 5w40
57 case tractor Chevron sae30
Re: O Reilly motor oil [Re: porvdub] #5078783 04/18/19 11:29 AM
Joined: Oct 2004
Posts: 9,607
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bullwinkle Offline
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It’s a 4.0, anything from (recommended) 10W30 up to 20W50 works fine.


06 Ram 3500 CTD 4X4(FG Venturi), 93 GMC C3500 6.2, 89 F-450 7.3, 98 XJ 4.0(XG8A), 05 xB(XG3600), 18 Transit 3.7, 03 Merc Grand Marquis 4.6 2V(XG2)
Re: O Reilly motor oil [Re: porvdub] #5078793 04/18/19 11:35 AM
Joined: Jun 2016
Posts: 387
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JoelB Offline
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Joined: Jun 2016
Posts: 387
Cheaper to buy supertech and its at least of equal quality.


Mine: 2019 Chevy spark 1.4 Non-turbo
Mobil 1 0w20 AFE
ACDelco UPF64R

Wife's: 2018 Chevy spark 1.4 Non-turbo
Mobil 1 0w20 AFE
ACDelco UPF64R
Re: O Reilly motor oil [Re: JoelB] #5078802 04/18/19 11:44 AM
Joined: Oct 2009
Posts: 5,471
JohnnyJohnson Online Content
Online Content
Joined: Oct 2009
Posts: 5,471
Originally Posted by JoelB
Cheaper to buy supertech and its at least of equal quality.


This~!


2004 Corolla 136938
Out: Havoline Pro DS 10w-30 Purolator PureOne 10-29-19 136457
In: Pennzoil Platinum HM 5W-20 ST 4386
2006 Duramax 76703
Out: T6 5W-40 XG9100 73705
In: Rotella Dino PH9100 11-3-19
Re: O Reilly motor oil [Re: JoelB] #5078803 04/18/19 11:44 AM
Joined: Apr 2017
Posts: 2,118
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dogememe Offline
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Joined: Apr 2017
Posts: 2,118
Originally Posted by JoelB
Cheaper to buy supertech and its at least of equal quality.

Depends on your location. O'Reilly is 0 miles away from where I work and Walmart is at least a 30 minute drive away, and gas isn't free. O'Reilly oil is fine, I haven't seen many UOAs of it but I've used it in various vehicles with no problems.

Last edited by dogememe; 04/18/19 11:45 AM.

2010 Ford Escape 2.5 ~101K Miles: Castrol Magnatec 5W-20, Wix Filter.
2001 Chevy Suburban 5.3 ~283K Miles: Unknown Oil, Filter.
Re: O Reilly motor oil [Re: dogememe] #5078833 04/18/19 12:20 PM
Joined: Aug 2018
Posts: 222
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jayjr1105 Offline
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Joined: Aug 2018
Posts: 222
Originally Posted by dogememe
Originally Posted by JoelB
Cheaper to buy supertech and its at least of equal quality.

Depends on your location. O'Reilly is 0 miles away from where I work and Walmart is at least a 30 minute drive away, and gas isn't free. O'Reilly oil is fine, I haven't seen many UOAs of it but I've used it in various vehicles with no problems.


Walmart will ship a couple jugs/filters to your doorstep for free.


2013 Mazda 3 - Supertech FS 0w20
2005 Honda Odyssey - Supertech FS HM 5w20
Re: O Reilly motor oil [Re: porvdub] #5078847 04/18/19 12:34 PM
Joined: Jan 2011
Posts: 798
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DGXR Offline
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Posts: 798
If it has the API starburst logo "for gasoline engines" and the classification donut that meets/exceeds your required spec, you can use it.
See the passenger car engine oil information provided here.

Last edited by DGXR; 04/18/19 12:34 PM.

1995 Corvette coupe LT1 6-speed
2006 Tacoma 2.7 Base SR5 AC
1999 Yamaha YZ400FL
2003 Honda XR400R
Re: O Reilly motor oil [Re: porvdub] #5079303 04/18/19 08:26 PM
Joined: May 2015
Posts: 55
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Jesse_NE Offline
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Joined: May 2015
Posts: 55
If you don't mind motor oil in a cardboard box, Havoline's 6qt smart change boxes sold through Walmart beat Supertech on price per quart. If you can meet a $35 floor, Walmart will deliver it to your doorstep for free.

Re: O Reilly motor oil [Re: porvdub] #5079335 04/18/19 09:25 PM
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Posts: 1,730
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WiskyBadger Online Content
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I don’t know yet but OReillys keeps giving me $10 of $20 so I buy their Dexos full syn. Makes it a good price and I don’t have to go to Walmart.


11 Silverado 73k Mobil Super Syn Delco filter
11 Traverse 120k Frankenblend Ultra Power filter
78 Chevy C10 Stepside VR1 10w30/20w50 mix Wix filter
Re: O Reilly motor oil [Re: dogememe] #5079511 04/19/19 05:50 AM
Joined: Nov 2008
Posts: 14,766
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supton Offline
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Originally Posted by dogememe
Originally Posted by JoelB
Cheaper to buy supertech and its at least of equal quality.

Depends on your location. O'Reilly is 0 miles away from where I work and Walmart is at least a 30 minute drive away, and gas isn't free. O'Reilly oil is fine, I haven't seen many UOAs of it but I've used it in various vehicles with no problems.

Reasonable logic to me.

For me, it's a mile or so out of the way on my commute, so it's nothing for me to swing in. If it was more effort then I'd do bulk buys and/or looking into mailorder.


2011 Toyota Camry, base, 2.5L/6MT, 194k, hers
2010 Toyota Tundra DC, 4.6L/6AT, 155k, ours
1999 Toyota Camry LE, 2.2L/4AT, 215k, his
Re: O Reilly motor oil [Re: DGXR] #5107986 05/17/19 07:12 PM
Joined: May 2019
Posts: 182
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OnTheRocks Offline
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Joined: May 2019
Posts: 182
Originally Posted by DGXR
If it has the API starburst logo "for gasoline engines" and the classification donut that meets/exceeds your required spec, you can use it.


I'm trying hard to find a motor oil without the starburst or donut. Does that even exist?

Re: O Reilly motor oil [Re: WiskyBadger] #5107994 05/17/19 07:19 PM
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Posts: 182
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OnTheRocks Offline
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Posts: 182
I just bought 5 quarts of O'Reilly full synthetic. Pretty good price with the coupon. If the coupons keep coming, I will keep buying. $22 oil becomes $12 oil.

If nothing else, this jug could be used to top off between oil changes. Just keep it in the back of car, along with other assorted "just in case" stuff.

I don't have a fancy car with a high performance engine. It's a Ford, which is not all that special.
Factory spec is synthetic blend. Just about any oil will do for me.

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