Bottom of the (Pure) barrel?

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OK, I worked as a kid at a Exxon gas station. Changing oil etc. Oil in cans, drained on a rack. A co-worker liked all the additives that drained last.
So here is what I see today in several 5 qt jugs of Pennzoil Ultra-Pure
I've been using Castrol in the green jugs forever. Maybe it was there, maybe not.....maybe just could not see it?
Do I want this in my engine? Is the filter going to filter it out? Should I shake the jug before adding it?

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What is it? If it's part of the package shouldn't I want it in my engine?
 
This has been a cause for concern for many years. Always Pennzoil. Most say to shake it up and it will be fine. But, it's an expensive oil. The additives fall out of suspension in the bottle. What does it do in the engine? Perhaps, someone with Chemistry experience can explain this phenomena.
 
This happens every winter. It gets cold. Stuff settles.

Shake your jugs before opening
 
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Makes no sense..If it 's good for the motor...then stay in suspension.
 
If one or more of the additives is not present in the intended volume then the oil no longer meets specs. I would want to put that fall-out into the engine.
And shame on Pennzoil for making such a product.
 
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Originally Posted by Onetor
This has been a cause for concern for many years. Always Pennzoil. Most say to shake it up and it will be fine. But, it's an expensive oil. The additives fall out of suspension in the bottle. What does it do in the engine? Perhaps, someone with Chemistry experience can explain this phenomena.

Heat?
 
Originally Posted by WobblyElvis
If one or more of the additives is not present in the intended volume then the oil no longer meets specs. I would want to put that fall-out into the engine.
And shame on Pennzoil for making such a product.

What do you suppose the manufacturing tolerances are? Add to that motor oil additives get depleted anyways.
 
Yup, SOPUS oils seem to be the biggest offenders of this, but have seen it in a few others (Peak and Havoline HM). I have had many Pennzoil Platinum and Quaker State qt bottles and 5qt jugs that have this issue.
I shake the bottles'jugs before pouring in.

There are 2 thoughts on this.
One: it is additives that fall out of suspension during storage and should be shaken (and warmed per some) before pouring in.
Two: it is contaminates that have fallen out of suspension and don't need to be in the engine.

Which is it, no idea, but tend to lean to the first (hence why I shake up my oil containers before using)
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I find it happens to most oils I've used if they set long enough. Just shake the container and pour. We are way overthinking about a normal occurrence.
 
Originally Posted by Jimmy_Russells
Originally Posted by PimTac

Shake your jugs before opening

I like this advice
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A more effective way is to pour 1/3 to 1/2 the jug into the engine ... then shake it good. That makes for a more violent shaking inside the jug.

Or you could just go with Valvoline Advanced which never has any sediments in the bottom of the jugs.
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I doubt this will re-suspend by just shaking the bottle, more likely it will plug up the oil filter! Maybe even cause bearing damage if you prefill your oil filter!

You would need to put the oil into a blender to mix it good enough. First pass the oil filter will remove these "solid partials" (maybe it's actually PTFE?) it might not even be part of the add pack, a contamination defect, I would return.
 
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