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Super Member
Do Car Shampoos Go Bad?
I would never think that car shampoos would go bad because they're just shampoos. So I've been stocking up gallon jugs of Meguiar's Gold Class whenever they go on sale.
The jug I purchased about 3 years ago has very thin consistency and it doesn't produce that much suds anymore. I went to my in-laws last Christmas and he has a new jug of Gold Class. I used it to wash their cars and the shampoo was very thick and viscous. And it produces a lot of suds! My Duragloss shampoo is also starting to be thin in consistency as well.
So do you guys know if shampoos go bad?
2011 SEMA Meguiar's Car Crazy Showcase Team
2016 Competition Ready Barn Find Porsche Team
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Regular Member
Re: Do Car Shampoos Go Bad?
Originally Posted by Marc08EX
I would never think that car shampoos would go bad because they're just shampoos. So I've been stocking up gallon jugs of Meguiar's Gold Class whenever they go on sale.
The jug I purchased about 3 years ago has very thin consistency and it doesn't produce that much suds anymore. I went to my in-laws last Christmas and he has a new jug of Gold Class. I used it to wash their cars and the shampoo was very thick and viscous. And it produces a lot of suds! My Duragloss shampoo is also starting to be thin in consistency as well.
So do you guys know if shampoos go bad?
i think they do, ive noticed it with mine but i live where its cold. I brought my soaps inside this winter and the seem to be doing better
None of mine are 3 years old, but they are 1 year old and still doing just fine. This summer im going to make a point of using up my old stuff, that way i can switch over to mequires hyperwash or something like that
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Re: Do Car Shampoos Go Bad?
I've had them where they start to grow something in them, kind of gray stringy stuff that will clog up screens in foam guns. I've never had any problem with Meguiar's soaps, although I do have an old gallon of #62 that I've never used and the bottle is opaque so I don't know.
I've never experienced thinning with a soap, but surely have with polishes and liquid LSP's.
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Super Member
Re: Do Car Shampoos Go Bad?
I'm beginning to think three years might be the tipping point. I too had a jug of the same product do the exact same thing. I can't remember how long ago I purchased it, but it had to be at least three~four years ago
I also just killed off a bottle of DP Power Wash, which after two years was still going strong with great results. I've not had anything else in inventory go more than a year or so before I've used it all up.
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Super Member
Re: Do Car Shampoos Go Bad?
Lol I just help my parents clean out their garage and found a gallon of Gold Class Shampoo and a gallon of Final Inspection. These two have to be 8-11 years old, both smelled ok and seemed the right viscosity. I always enjoyed GC and figured what the hay and used it on my wheels,worked fine. Also forgot how much I really liked using #34.
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Re: Do Car Shampoos Go Bad?
I hope not! I still have half a gallon of D112 Super Soap.
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Super Member
Re: Do Car Shampoos Go Bad?
-Cleaning supplies, including those designated for
automotive use, can degrade over time and lose
their effectiveness.
-Even the plastic containers they’re stored in
may also affect their formulas over time.
•This phenomenon can be blamed on entropy:
"The inevitable and steady deterioration of a system..."
And it affects everything under the Sun!
Note:
The usual recommendations, from ASTM testing
for car shampoos, are:
~18 months, once opened; ~36 months unopened.
Of course there are exceptions to the rule.
Bob
"Be wary of the man who urges an action in which he himself incurs no risk."
~Joaquin de Setanti
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Re: Do Car Shampoos Go Bad?
Originally Posted by FUNX650
The usual recommendations, from ASTM testing
for car shampoos
ASTM tests car shampoos?
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Super Member
Re: Do Car Shampoos Go Bad?
Originally Posted by Setec Astronomy
ASTM tests car shampoos?
"ASTM's soaps and polishes standards are
instrumental in the preparation and evaluation
of surfactant products that are usually used in
conjunction with water for washing, cleaning,
and polishing.
Such products include soaps, detergents, bleaches,
waxes, and polishes. These standards help identify
the certain physical and chemical properties of soaps
and polishes such as particle size, pH, cloud point,
recoatability, glide adhesion, freeze/thaw resistance,
cleaning efficiency, and foaming properties among others.
These soaps and polishes standards help guide product manufacturers in the proper methods of producing and
testing such products to ensure quality towards safe use".
Source: ASTM International
************************************************
Bob
"Be wary of the man who urges an action in which he himself incurs no risk."
~Joaquin de Setanti
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Super Member
Re: Do Car Shampoos Go Bad?
I noticed the CG soaps separate quickly but the Meg's Hyper Wash seems fine.
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