Why shake oil bottle before use?

[J]

Hi,

If anything in engine oil will come out of
suspension (like the troublesome PTFE) while
sitting in storage, shouldn't you leave whatever
comes out of suspension in the oil bottle and
not force it back into suspension only to have
it come out of suspension again inside your
engine?

So, are there any good reasons for
shaking the bottle before pouring oil into
engine?

Jae

 

[JonS]

I would tend to agree. You don't want what is in the bottom of the bottle to get into your engine. The only time i have seen this is with Castrol GTX.

 

[Terry]

Yes, I paid for that precip and I want it all !!!!

 

[mikeinaustin]

I've seen some junk on the bottom of redline power steering fluid bottles. I don't know what that stuff is and I don't know if you want it or don't want it!

 

[unDummy]

Why shake OJ?
Why shake touch up paint?
Why shake anything?

Why NOT

 

[J]

quote:

---

Originally posted by unDummy:
Why shake OJ?
Why shake touch up paint?
Why shake anything?

Why NOT

---

Hi,

A human being is essentially topologically
equivalent to a worm. Our digestive tract
runs down the middle. Only digested stuff
go through the inner lining of your small
intestines.

Touch up paint dries and stays there.

Oil to a car is like blood to a human being.

I don't want my quack doctor shaking up
precipitates in pint of blood before tranfusing
me with it. What comes out of suspension in
container of blood will come out of suspension
in my blood stream and will give me a stroke
or at the very least a small, teeny-weeny,
minor, no-big-deal heart attack.

Jae

 

[satterfi]

I emailed Redline about seeing sediment in some of thier products. He said: " that is just part of the additive package that can settle out, it
isn't harmful in any way. It should recombine when shaken."

 

[Green Max]

quote:

---

Originally posted by J:
A human being is essentially topologically
equivalent to a worm. Our digestive tract
runs down the middle. Only digested stuff
go through the inner lining of your small
intestines.
Jae

---

J, you don't happen to work with C.elegans by chance?

 

[J]

quote:

---

Originally posted by Green Max:
J, you don't happen to work with C.elegans by chance?

---

Hi,

I don't know who that is.

Jae

 

[Rallyfan]

C. elegans is a nematode worm and is used as a laboratory model, initially for work having to do with development. It's a great system actually.

As for the precipitates, I'd hesitate to pour stuff into the motor or even steering pump reservoir. Sure, as Redline said, it'll go back into solution when shaken, but doesn't it imply that it can fall out of solution while in the crankcase? I suppose the pumping will mix it in again, and it ought to be OK, but still...

 

[J]

quote:

---

Originally posted by Rallyfan:
C. elegans is a nematode worm and is used as a laboratory model, initially for work having to do with development. It's a great system actually.

As for the precipitates, I'd hesitate to pour stuff into the motor or even steering pump reservoir. Sure, as Redline said, it'll go back into solution when shaken, but doesn't it imply that it can fall out of solution while in the crankcase? I suppose the pumping will mix it in again, and it ought to be OK, but still...

---

Hi,

It's not the pumping that concerns me. Most
of the time, your car is just sitting idle.

What happens when your car is sitting out in
the cold?

I'm never shaking my oil bottles.

Jae

 

[Rallyfan]

Right, I don't shake mine either.

 

[buster]

quote:

---

I emailed Redline about seeing sediment in some of thier products. He said: " that is just part of the additive package that can settle out, it
isn't harmful in any way. It should recombine when shaken."

---

It's probably all of that Moly.

 

[Quattro Pete]

My take on this is: Everything that was put in that bottle, was put in there for a reason and is part of the oil I purchased. I'd be sure that all of it makes it to the engine.

If whatever settles at the bottom was not meant to be there, don't you think the oil manufacturer would have already taken it out by letting it settle in their distribution tanks first?

For all you know, what settles at the bottom of an oil bottle is part of the additive package that most of use are so much after and that we use to differentiate one oil from another, and based on which we make our purchasing decisions. Why would you then go ahead and throw it all in the trash instead of in your engine?

 

[J]

quote:

---

Originally posted by Quattro Pete:
My take on this is: Everything that was put in that bottle, was put in there for a reason and is part of the oil I purchased. I'd be sure that all of it makes it to the engine.

If whatever settles at the bottom was not meant to be there, don't you think the oil manufacturer would have already taken it out by letting it settle in their distribution tanks first?

For all you know, what settles at the bottom of an oil bottle is part of the additive package that most of use are so much after and that we use to differentiate one oil from another, and based on which we make our purchasing decisions. Why would you then go ahead and throw it all in the trash instead of in your engine?

---

Hi,

What if the precipitation is due to poor
quality control by the manufacturer? There
are some variations among batches of oil.
Some batches may have too much additives to stay
in suspension.

Jae

 

[Quattro Pete]

If the manufacturer has such poor quality control, I'd stay away from their products altogether.

 

[labman]

If an additive is depleted over the life of the oil, the amount needed may be greater than the amount that is soluble. As it is depleted, more will go into solution when hot oil is circulating around the oil pan. Each chuck hole you hit stirs stuff up.

There may good things that are not soluble in the oil and may work without being in solution. As long as thee particle size is small enough and non abrasive, particulates shouldn't be a problem.

I will shake my Pennzoil 5W-30.

 

[Leo]

Actually I noticed lil bit of sediment on the bottom of the bottle of my Redline SI-1 Cleaner. I initially shook it up, but then I decided to let it stand for a few days cos I realised I dont want it to settle out on the bottom of my petrol tank. I dont drive regulary either..

 

[VeeDubb]

quote:

---

Originally posted by J:
Hi,

If anything in engine oil will come out of
suspension (like the troublesome PTFE) while
sitting in storage, shouldn't you leave whatever
comes out of suspension in the oil bottle and
not force it back into suspension only to have
it come out of suspension again inside your
engine?

So, are there any good reasons for
shaking the bottle before pouring oil into
engine?

Jae

---

When I spoke to a Valvoline tech to ask about the shelf life of Synpower, the guy told me that the shelf life is long but you must shake the bottle if it's been sitting for a long time.

That was good enough for me to shake the bottle.

As for quality control issues, years ago they found dead mice and cans of Coke. I still drink Coke. I think that pretty much sums up my take on that.

 

[3 Mad Ponchos]

Leave it sitting long enough and any oil will start to have its additives come out of suspension. It's easy enough to test: fill a mason jar with oil, stick it in a closet, and check on it in 6 months.

How long is your car going to sit unused? A week? Leave your oil sitting out for however long you plan on not using your car and decide if you can live with the results.

Cheers, 3MP