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Old 10-15-2010, 07:22 PM   #1
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Real Real Stupid Motor Oil Question

I put a lot of miles on my Jeep so I do a lot of oil changes.

I don't have to say anything about economic times....

Last few oil changes I abandoned my great name brand motor oil at $4-$5 bucks a quart.

Been using O'Reilly motor oil from my Checker dealer because it's $2.29 a quart.

Is this stupid?
Is there a difference, quality-wise in the manufacturing process?

My basic cynical assumption is if I'm paying 1/2 as much, then it must suck.

Thanks for any replies.--Brent

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Old 10-15-2010, 07:33 PM   #2
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Now a days most oils (conventional not synthetic) are pretty close to the same. All oils have to be made to certian standards that years ago they didn't have. Some have a few extra additives for high mileage vehicles, but other than that they are so close that most would never notice. Most of the time people have their certian preference in oil brands and will pay extra just for that. I myself use Castrol because when I was young (before all the new standards) it didn't break down as quick as most other oils.

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Old 10-15-2010, 07:36 PM   #3
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O'Reilly's brand of oil is manufactured and packaged by Omni Specialty Packaging. Omni is an independent lubricant manufacturer in Shreveport, LA. While Omni is not affiliated with any "major" manufacturer, we do buy our base oils from companies like Exxon/Mobil and Shell.

What specs does O'Reilly motor oil meet and how does it compare to name brand oils?

Answer: O'Reilly brand motor oils meet API 'SM' service classification and where applicable ILSAC 'GF-4'. Both API 'SM' and ILSAC 'GF-4' are the latest industry standards for passenger car motor oils. These are the same specifications that all "major" brand oils should meet.

And yes........... I work at O'reillys so I have the inside scoop.
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Old 10-15-2010, 07:36 PM   #4
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If you change your oil at the 3K mark like a lot of jeepers tend to, I'd say the difference is probably nil.

Better off with higher quality oil (and full synthetic) if you tend to "stretch" your intervals though.
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Old 10-15-2010, 07:37 PM   #5
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Check the API rating and make sure its the same as name brand.
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Old 10-15-2010, 07:49 PM   #6
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My brother in law is a CSK (O'Reilly) warehouse manager in Phx and has been for many years. But I didn't ask him!

Still---no difference between basically a $3 discrepancy between motor oils is suspicious to me. I change oil every 2K miles and I did this today along with tuneup and I'm all cleaned up and not going to fish the empty quart bottles out of my trash bin yet. API would be telling....if I had faith in national standards.

PS-Aelwero--after installing a new trans 2 days ago I switched my gear oil to synth. First time ever in the synth world...

thanks for the replies.
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Old 10-15-2010, 09:59 PM   #7
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well first off your wasting oil changing it every 2k, and chances are that those changing their oil at 3k are wasting oil. i personally go 4-5k between oil changes and add as required to maintain the operating level.

here is why, most new car manufacturers have a minimum oil change interval of 5k or more, specifically GM says not to change the oil till the car tells you to, if you have an oil monitor system, or at least once per year. New cars use the same oil as the rest of us, yes i understand we have older engines with more miles for the most part but 3k miles is IMO a waste of oil.

That 3k mark was used back when there was no standard for oils and engines were built as loose as a porn star. New oils are engineered to withstand the heat and keep the engine cleaner.

but if you like keeping the oil companies pockets full of your hard earned dollars keep changing your oil with a 60's mentallity and when oil finally gets to the point where it costs $10/qt for the cheap stuff ill know who to blame...and it wont be BP...lol yes i had to go there.
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Old 10-15-2010, 11:02 PM   #8
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Quote:
Originally Posted by Abomination93 View Post
well first off your wasting oil changing it every 2k, and chances are that those changing their oil at 3k are wasting oil. i personally go 4-5k between oil changes and add as required to maintain the operating level.

here is why, most new car manufacturers have a minimum oil change interval of 5k or more, specifically GM says not to change the oil till the car tells you to, if you have an oil monitor system, or at least once per year. New cars use the same oil as the rest of us, yes i understand we have older engines with more miles for the most part but 3k miles is IMO a waste of oil.

That 3k mark was used back when there was no standard for oils and engines were built as loose as a porn star. New oils are engineered to withstand the heat and keep the engine cleaner.

but if you like keeping the oil companies pockets full of your hard earned dollars keep changing your oil with a 60's mentallity and when oil finally gets to the point where it costs $10/qt for the cheap stuff ill know who to blame...and it wont be BP...lol yes i had to go there.
---Great reply. In a perfect world my conscience leans towards sticking an AMC 360 in my Chrysler with propane outfitting. Until we wise up (either party, I don't care) and start investing in these things and making them affordable for the working man...it ain't gonna happen. I'm not even sure I can trust the API rating or current standards. It would be my wet dream to not be dependent on mideast oil. Or Venezuelan. I'd like to be dependent on American oil, but no geologist thinks that's possible anymore..

I commute about 90 miles up and down a mountain every day except football Sunday and Saturday. Going up the mountain in the bulletproof but weak AMC I4 is hell. Coming down is nice. My gear oil in diffs/tranny is changed every year. My motor oil is changed every 2K because it's a rough way up, I'm not ashamed, and you really have to baby any 4 cyl engine-----------this from a guy with a 79 J10 Jeep Pickup V* (America's Finest) and a large carbon footprint outside of the YJ...and OK with that...

...that being said, I've run the better amc jeep into the ground a couple times and it was tough enough to withstand...the chrysler worries the snot out of me all the time...
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Old 10-15-2010, 11:59 PM   #9
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I can't find the API label on the bottle but at least I know its extra virgin and not that skanky slutty oil.
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Old 10-16-2010, 01:04 AM   #10
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Originally Posted by brent in az View Post

PS-Aelwero--after installing a new trans 2 days ago I switched my gear oil to synth. First time ever in the synth world...

thanks for the replies.
that's hilarious. I just joined the synth club last Saturday
Do we get membership cards or anything?
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Old 11-14-2012, 11:42 PM   #11
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Reccomendations on a yj daily driver with 135k miles on oil change intervals? I use high mileage synthertic 10w30 I've been reading online about hints to changing oil anywhere from 4-8k and the general consensus is 3k for a DD is wasteful.
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Old 11-15-2012, 07:09 AM   #12
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The only way to really tell oil type, viscosity, and change intervals is to have oil analysis done. Blackstone labs on the net can do it. Pretty cheap considering. It will tell you exactly what your specific needs are. It may be 3k intervals or 20k intervals. Any tard on the net can tell you what you should do. Only they can tell you what your motor wants you to do. My guess is at 3k miles your changing a bit early. I run 3500 miles on mine. Oil analysis recommended between 3500 and 4100 with the Walmart 5w30 that I use.

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