What to do with old oil..... - Chevelle Tech
Misc (NON CHEVELLE AUTOMOTIVE TECH) This section is for the Non-Chevelle Related automotive questions/answers or discussion.

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post #1 of 31 (permalink) Old Feb 15th, 19, 10:48 AM Thread Starter
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What to do with old oil.....

Guys , I am packing up and moving my junk across the state. I found a case of Quaker State DeLuxe 10 - 40 in the metal cans my Dad bought prolly 20 -25 years ago. I remember they use to say don t use QS as if was paraffin base and it would nasty up your motor. Hate to just chunck it. Was wondering if working in a quart with new oil at change time would not be to detrimental to the engine. But of coarse , I am not running much 10 -40 these days.......
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post #2 of 31 (permalink) Old Feb 15th, 19, 10:59 AM
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Re: What to do with old oil.....

Oil breaks down over time. Only thing those cans are good for is putting on ebay for anyone looking for automobile nostalgia. I would NOT put that oil in anything you depend on.
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post #3 of 31 (permalink) Old Feb 15th, 19, 9:45 PM Thread Starter
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Re: What to do with old oil.....

You are most prolly correct. i know cooking oils break down and for sure turn rancid over time....just never thought about that happening to sealed motor oil...but makes sense. Yep, yard sale or Fleabay for sure.
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post #4 of 31 (permalink) Old Feb 15th, 19, 10:02 PM
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Re: What to do with old oil.....

the waxy buildup on engines back then was most likely from lack of oil changes. I have used,since 1968, probably just about all the different brands of oil that have been on the market, Safeway Grocery store oil was one of them, I had no problems with any buildup on any engine in any vehicle I ever owned. It's a myth!!
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post #5 of 31 (permalink) Old Feb 15th, 19, 10:22 PM
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Re: What to do with old oil.....

Put on CL for $25 and let the new owner deal with it.

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post #6 of 31 (permalink) Old Feb 15th, 19, 10:29 PM
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Re: What to do with old oil.....

Back when I was a kid and had a Nova that used a fair amount of oil I used Pennzoil for a while as it was affordable but I still thought of it as a "premium" (name brand at least) oil. The engine developed a white scum on the inside of the valve and lifter covers. I don't know if that white goo was good or bad, but I didn't think it was good at the time. I switched to Phillips 66 Trop Artic and it burned less oil and the white scum went away.

I've never heard that quality motor oil will break down sitting in the can over time. Most motor oils are based on paraffinic crude oil. That in no way implies such oils contain wax, in fact one of the main refining steps used in making such crude into motor oil is called "dewaxing", a step that separates the substance used in making some waxes from the portions used in making motor oils.

The only reason I would hesitate to used older oil would be if it had a lower SAE rating than what is considered acceptable for the engine in question. If the oil manufacturing date was contemporary with the date the engine was built, I'd think you'd pretty much be okay. I recall using a case of 20-50 Valvoline racing oil that was about 15 years old, never had a problem with any of that "old" oil. It most certainly had more zinc than almost any modern non-specialty blend.
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post #7 of 31 (permalink) Old Feb 15th, 19, 10:41 PM
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Re: What to do with old oil.....

There is probably nothing wrong with the oil because its in a sealed can, some say the additives tend to separate over time. I will say its worth more/can as a novelty than using it in your engine.
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post #8 of 31 (permalink) Old Feb 16th, 19, 9:21 AM
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Re: What to do with old oil.....

There's just no purpose; the savings in using it will be so small as to pale in comparison to any possible damage. Ebay it.
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post #9 of 31 (permalink) Old Feb 16th, 19, 9:35 AM
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Re: What to do with old oil.....

I'd let somebody else experiment with it, Ebay or CL
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post #10 of 31 (permalink) Old Feb 16th, 19, 10:15 AM
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Re: What to do with old oil.....

FACT: OIL never wears out. Oil does get dirty & contaminated...
Bob


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post #11 of 31 (permalink) Old Feb 16th, 19, 10:21 AM
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Re: What to do with old oil.....

I might pour the oil into a container and see if any of the solids stay with the oil can to see if they had separated. Other than that I wouldn't hesitate to use it especially for your lawn mower or something like that
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post #12 of 31 (permalink) Old Feb 16th, 19, 10:34 AM
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Re: What to do with old oil.....

Quote:
Originally Posted by Rich-L79 View Post
Back when I was a kid and had a Nova that used a fair amount of oil I used Pennzoil for a while as it was affordable but I still thought of it as a "premium" (name brand at least) oil. The engine developed a white scum on the inside of the valve and lifter covers. I don't know if that white goo was good or bad, but I didn't think it was good at the time. I switched to Phillips 66 Trop Artic and it burned less oil and the white scum went away.
oh man back in my dads shop in the 80's we would get fords in in the winter blowing oil from every orifice.pull em inside,pull the pcv valve out and thaw it out and pull the valve covers and clean the snooty goo out of em,if they ran pennzoil it was worse,and add in a fram filer and it amazed me just how those engines survived.
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post #13 of 31 (permalink) Old Feb 16th, 19, 11:12 AM Thread Starter
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Re: What to do with old oil.....

As a kid , I remember my Dad pulling valve covers and in some of those engines gunk and goo would just almost up to the rocker arms. Dad said some folks would have either the wrong thermostat , too cold , or no thermostat , and that helped crude up the engine. Never forgot that.....but did hear lots a bad stuff about some oil brands....
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post #14 of 31 (permalink) Old Feb 16th, 19, 12:22 PM
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Re: What to do with old oil.....

Many of those old engines back in the day people never changed oil!
They leaked and folks ran engines hot until steaming
baking oil inside them engines = gunk.
Drive em till they quit running and junk em.
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post #15 of 31 (permalink) Old Feb 16th, 19, 3:59 PM
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Re: What to do with old oil.....

I remember when I was a kid 10-11 my Gfather saying Quaker State oil was bad, weird I remember that, and he didn't hesitate having an engine rebuilt by the same local garage/gas station when needed, 67 327 caprice, 69 cougar eliminator and a few trucks that I remember so I believed him and never to this day bought any QS, he said it did some odd build up in engines, he was a house painting cont. though


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