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| Pete. |
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Pete.
Super Spammer
Joined: 22 Aug 2006
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 Posted: 23:14 - 27 Nov 2010  Post subject: REMINDER - Antifreeze! |
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Just a reminder to everyone to check they have antifreeze in their bikes.
Popped core plugs are no fun at all!
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a.k.a 'Geri'
132.9mph off and walked away. Gear is good, gear is good, gear is very very good  |
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Quote Me Happy
Joined: 15 Jan 2005
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| Posted: 23:16 - 27 Nov 2010 Post subject: |
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Air cooled FTW 
On a side note, does antifreeze 'go off' after a while?
My Gasser's had the same stuff in it for a year and a half, just wondering if I should change it? |
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| Pete. |
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Pete.
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Joined: 22 Aug 2006
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| Posted: 23:27 - 27 Nov 2010 Post subject: |
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I think it does but not if the bike is in storage and not run. I'd guess that it would take a long while until it lost all 'anti-freeze' properties, if ever.
Unfortunately, last winter my 'busa which had only water for coolant froze up in the garage and popped the core plugs in the head. Was no harm done and not much effort to put them back in but a pain in the backside draining & flushing the water out of the engine. This year the coolant is drained.
____________________
a.k.a 'Geri'
132.9mph off and walked away. Gear is good, gear is good, gear is very very good |
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| G |
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G
The Voice of Reason
Joined: 02 Feb 2002
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| LongJohn22 |
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LongJohn22
Trackday Trickster
Joined: 16 Jul 2010
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| G |
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G
The Voice of Reason
Joined: 02 Feb 2002
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| Posted: 00:34 - 28 Nov 2010 Post subject: |
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A link to a random google result I found https://bioengr.ag.utk.edu/ExtProg/machinery/Articles/engcool.htm relating to degradation of antifreeze. I was researching issues with my car and found a variety of discussions on this subject. All just 'net research, but evidence points to it being reasonable. |
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| Pete. |
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Pete.
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Joined: 22 Aug 2006
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Posted: 08:51 - 28 Nov 2010  Post subject: |
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| LongJohn22 wrote: | Anti-freeze is an all year treatment, and amongst other things, is designed to protect against corrosion. If you fill an alloy engine with plain water, chances are you will suffer internal corrosion, in most cars, barring leaks, the anti-freeze that was initially used to fill the cooling system will still be there when the vehicle breathes its last. I have little reason to believe bikes are any different. The name "anti-freeze", is itself a misnomer, most people these days buy "coolant". |
You don't put anti-freeze in a bike to be used on a track John, in case of spills.
I bet there are a good few bikes on the road too who have none, perhaps because it was drained during maintainance/work by the owner and temporarily replaced with water then forgotten about.
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a.k.a 'Geri'
132.9mph off and walked away. Gear is good, gear is good, gear is very very good |
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| Paxovasa |
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Paxovasa
World Chat Champion
Joined: 25 Apr 2010
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| Posted: 08:58 - 28 Nov 2010 Post subject: |
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Thanks for the reminder 
Who do I send the repair bill to for putting antifreeze in an oil cooled engine? 
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Suzuki GSF600 K3 (in the fastest colour, black). |
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| stinkwheel |
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stinkwheel
Bovine Proctologist
Joined: 12 Jul 2004
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Posted: 13:34 - 28 Nov 2010  Post subject: |
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| G wrote: | I was researching issues with my car and found a variety of discussions on this subject. All just 'net research, but evidence points to it being reasonable. |
Well I'll give you the conclusion from some properly controlled, qualitative research (don't still have the actual figures). My sixth year chemistry project was on corrosion rates in steel and ways of reducing this rate.
One of the common corrosion inhibitors used in anti-freeze is sodium nitrite. This significantly reduces the rate of iron ion production in solution (the first step in corrosion). Something like a 70% reduction when used at anti-freeze rates.
It DOES however become exhausted, the Nitrite "mops up" the free protons in the redox reaction by reducing to nitrate. The longer it sits, the less effective it is.
This process is ongoing, even if it is just sat doing nothing but the rate of corrosion (and therefore nitrite degradation) is increased by temperature. It'll go off anyway but will go off quicker if the engine is run up to working temperature regularly.
There is another factor though. Bringing the coolant up to boiling point drives any dissolved oxygen out of the liquid. Corrosion rates in water that has been boiled then allowed to cool without being in contact with the atmosphere for more oxygen to dissolve (I used a layer of oil on the surface of the water to achieve this) are much reduced.
I do wonder, since the coolant is pretty much a closed system, if this has an effect too. Wouldn't surprise me if it is significant in the context of an engine but I didn't go that far. I was concentrating on steel load-chain used in marine environments and suggested storing it in a tank of fresh water with a layer of oil on top rather than dumping it on the deck of the rig would significantly increase its useful lifespan.
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles. |
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Old Thread Alert!
The last post was made 15 years, 220 days ago. Instead of replying here, would creating a new thread be more useful? |
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