semi weird oil change question
 

When he was here on one of his "big rides", Ron Madaio had a thing when changing oil.
He'd pour in half the bottle, cap it, then shake the remaining half before pouring it in.

He explained that the oil company additives would settle to the bottom of the bottle when sitting on a shelf. The shaking put them back into solution.

I'm not sure, but it made enough sense to me that I picked up the habit, figuring it can't hurt, might help.

So, braintrust opinions on this?

Lubeman once said that the additives don't separate out. If I was using oil that had been on my shelf for many year, I might shake the bottle. I don't use old oil however.

If you empty every last drop into the oil fill tube, what difference does it make? I usually let each quart bottle sit upside down for a few minutes on the funnel 'til it stops dripping. Use that time in between each bottle to clean up the garage, put away the tools, etc.

I shake them too. I used to work with a scientist (ex Castrol man) who told me to do that.

It makes you wonder about workshops with a 44 gallon drum of the stuff that last months and never shaken or stirred.

I never use the single quarts.

Actually, Ron was using the 5 quart Mobil one jugs...

Like I said, I figure it can't hurt, might help.

I like mine shaken, not stirred.

I like my oil without precipitate .....

I used to shake the one-quart cans.....back in the 1960's. It was all straight grade motor oil, and 90% of that was 30wt. If you didn't shake the can, you could see the remains of what I assume was an early additive package in the bottom couple of tablespoons from the bottom of the can. It used to look like very fine coffee grounds, but very "mushy." Of course, back then every engine had a thick coating of sludgy guck on everything. That's why you drained the oil hot and shook the new can before you poured it in. Back in the day retail motor oil was pretty much the way it came out of the ground.

Y'all seen this? Wonder how long it will be until motor oil comes in these handy dandy pouches? https://uploads.tapatalk-cdn.com/202...d1924ba91c.jpg

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This is 100% the case. I use Penzoil pLatinum in my modern vehicles.you can see the additives in the bottom of the 5L jugs if you don’t do this.

Maybe other oils are less prone to this.

We are supposed to change the oil?

If this were true, and I am not saying it isn't, what happens to the oil sitting in the crankcase of a car that is not used for a period of time? If all the additives are laying in the bottom, does the car start without the benefit of the additives in the oil. Starting is when most of the wear takes place.

This is brilliant. I don't see the need for motor oil in pouches, but these things would make getting transmission fluid into a manual transmission a LOT easier and less messy.

Only when it's time to change the blinker fluid.

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So a plastic squeeze tube. I know, maybe we should get our oil in a round cardboard container, with just a aluminum top that is easy to puncture with a totally releasable spout!

Something new and innovative like this!

<iframe width="1250" height="703" src="https://www.youtube.com/embed/DoZLF34OqqU" title="Oil Can filler spout - how it was done" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>

I've used the plain one above many times....but I don't remember ever seeing the trigger one.

Might've been "pro use only". (But that skimpy rivet making up the pivot ain't gonna last long in a commercial shop!)

Too bad Lubey decided to skedaddle this BBS. He's the one that could give us insight on the OP's question.

(Couldn't hurt, might help. Like so much of life.)

I still have a small collection of can spouts - I'm not sure why I keep them.

I used the bagged gear oil to service the axles in my pickup this spring. I thought it was weird when I bought it, but it's easier to use than the bottles. I didn't even need the pump to to fill the front diff.

Regarding the additives separating - I seem to remember that being an issue with Kendall or Pennzoil back in the day. I think that was also the reason for GM backing away from 10w-40. I'm not aware that it's an issue with any of the modern, major synthetic engine oils.

I have seem reports that fluid separation is cause of the problems with the GM 8 speed truck transmission - supposedly a reformulated fluid fixes it. I think it was Ford that stopped supplying a transmission fluid in bulk because of separation - they were only supplying ATF to dealers in cases of quart bottles.

So lube separation is / has been a real issue. I'm just not aware that it's a current problem with motor oil. my practice is to let my bottles drain completely what I do a fill, so I can't say I'm going to worry about it.

I've never shaken an oil bottle but I do pour out every last drop. It's more of a waste not/want not deal plus I try to be as environmentally conscientious as possible while still being a gear head...don't want to put motor oil in the recycle bin, just plastic. FWIW, after it seems like the bottle is empty, I leave it on its small side for a while and get another pour out of it.

I did two oil changes yesterday and did not notice anything different looking about the last few drops of oil coming out. One change was Castrol synthetic and one was NAPA cheap conventional oil. Both 5w30.