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Old 09-02-2006, 02:07 PM
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how old is too old for paint sitting in a can?

i've had a gallon of yellow paint sitting for around 11 years is unused and filled to the top. how long can it sit,or is it too late to use now?

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Old 09-02-2006, 04:43 PM
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Depends on "what" it is. Most paint is fine as long as it is not reduced or some "special" kind of something.
Questions might be,
Can you still get the proper reducer for it?.
Is it "legal" to spray in your area?
Have a local paint store shake it good on their machine and have a go with it.
I've use Rustoleum enamel that is like ancient and as long as it was shaken good,It's painted just like a new can.
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Old 09-02-2006, 05:32 PM
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I used some acrylic enamel a few years ago that was at least that old with no problems at all and it had been in an attic exposed to both heat and cold during most of that time. I tossed the can of old hardener that was with it but the unopened can of reducer and paint along with the fresh hardener worked just fine. Having a paint store shake it for you sounds like a really good idea.

Last edited by oldred; 09-02-2006 at 05:41 PM.
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Old 09-02-2006, 07:07 PM
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Most likely its OK but a way to check would be have the local paint store (as stated) throw the can on a shaker for ten minutes and then pour a little in a mixing cup and reduce at right ratio and then pour through a strainer and take a look at how the strainer looks when your done.

That step could save you some real headaches if it is bad.

Last edited by BarryK; 09-02-2006 at 07:14 PM.
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Old 09-02-2006, 09:30 PM
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Just used a little corvette grey dbu base I've been toting around place to place throughout the years kept mainly in the basement. It must be around 17 years old. I originally bought it for my old cutlass I painted in my late teens, but abandoned using it and went all blue on that car. Wouldn't you know it, the color looked real close to the original smoke grey under the hood of a mustang I worked on. I had two little primer spots to squirt a little color on. The activator was long toast, but I darkened it just a tad and added some clear activator. It seemed to spray fine, but only did small area. It looked better then having primer spots. Don't know if there will be any ill effects, but if there is its only under the hood. Time will tell I guess, well if I hear anything, but no immediate reactions.
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Old 09-03-2006, 07:56 PM
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It all depends.I always put all my leftover paint in a refrigerator and can use paint that I have had for many years.
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Old 09-04-2006, 08:27 AM
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Yeah, basically, if you do as Barry outlined and it LOOKS good, it IS good. If it is smooth and flows thru a strainer, it IS ok. There isn't going to be anything chemically "invisible" to cause you trouble.

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