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Tim in Phoenix
Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix
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| Posted: Tue Sep 11, 2018 2:54 pm Post subject: "Mintiest" Green Tube you ever heard of.......LOL |
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So.....
I have a green tube that was sitting forgotten in a corner for a couple of years; the glycol looked like Jello and there was some crap stuck to the glass, like a gray film. I have the bellows off, it was leaking a little; Curt was kind enuff to send me a couple of his.
I'm trying Windex, straight ammonia, alcohol; nothing is taking this film off. I have box of TSP, but TSP etches glass it says. I can scrape it with my fingernail so it does come off. Hmmm, what about some Toothpaste?
Yes! Minty Crest on a wet cotton cloth does the trick! LOL
Minty once more.
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Pokemon640
Joined: 28 Jul 2015
Posts: 49
Location: Greece
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| Posted: Thu Sep 13, 2018 4:25 am Post subject: |
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May i see your green tube with toothpaste ? 
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Tim in Phoenix
Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix
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| Posted: Thu Sep 13, 2018 4:13 pm Post subject: |
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No! LOL
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Tim in Phoenix
Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix
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| Posted: Mon Sep 17, 2018 4:45 pm Post subject: |
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Guys
If your glycol turned to jello and left a mess on the housings, oven cleaner and a wire brush will clean that up nicely.
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wanderer
Joined: 11 Jan 2015
Posts: 76
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| Posted: Mon Sep 17, 2018 5:40 pm Post subject: |
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What would cause the glycol to turn to Jello in the first place?
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Tim in Phoenix
Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix
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| Posted: Mon Sep 17, 2018 6:17 pm Post subject: |
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| wanderer wrote: | | What would cause the glycol to turn to Jello in the first place? |
Glycol is corrosive and will start to dissolve bellows rubber and silicone glue after a while, nine or ten years
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wanderer
Joined: 11 Jan 2015
Posts: 76
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| Posted: Mon Sep 17, 2018 6:35 pm Post subject: |
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OK - so the dissolved rubber and silicone can make your glycol turn to Jello. And it probably won't leak as there is still more rubber\silicone there still in place, and of course now your glycol might be thicker as well.
So in general, what's the best practice here for when to replace the glycol in a PJ? Every 5 years or so?
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Tim in Phoenix
Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix
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| Posted: Tue Sep 18, 2018 3:10 am Post subject: |
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Guys
There is no set interval. Replace glycol when it clouds or discolors or you need new bellows. Chemistrystore.com has it; triethylene glycol 100%. I cut mine with ten percent distilled water.
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