She's banged her head a few times.
Her head or your head?
:hysterically_laughi:hysterically_laughi
Her head or your head?
:hysterically_laughi:hysterically_laughi
tomcat59alan
Well-Known Member
Her's for sure.
Datatek
Well-Known Member
Who said anyting about leaks? I was questioning why it would run cooler with new antifreezeWell known that antifreeze will find any weak spots and cause leaks. So yes it will flow through gaps water won't flow through.
Who said anyting about leaks? I was questioning why it would run cooler with new antifreeze
Well the two scenarios are linked. The antifreeze lowers the surface tension of the water mixed with it so it makes better contact with the hot metal so transfers heat better. The surface tension being lowered enables the mixed coolant to run through gaps the water could not get through so a bad seal will be found out with antifreeze. Standard practice was to check for leaks when antifreeze was added, if one was found back off slightly and re nip the clip. But as you have never done any work like this for a living you would not be expected to know that.
PS. In your terms it would be like removing all the single strand wire and replacing it with multi strand wire. Better flow.
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Datatek
Well-Known Member
But leaks were never mentioned, I know well enough how to look for leaks thanks. No I've never done it for a living, just built race cars & bikes for fun, but then I haven't built aircraft, or been a diver eitherWell the two scenarios are linked. The antifreeze lowers the surface tension of the water mixed with it so it makes better contact with the hot metal so transfers heat better. The surface tension being lowered enables the mixed coolant to run through gaps the water could not get through so a bad seal will be found out with antifreeze. Standard practice was to check for leaks when antifreeze was added, if one was found back off slightly and re nip the clip. But as you have never done any work like this for a living you would not be expected to know that.
PS. In your terms it would be like removing all the single strand wire and replacing it with multi strand wire. Better flow.
But leaks were never mentioned, I know well enough how to look for leaks thanks. No I've never done it for a living, just built race cars & bikes for fun, but then I haven't built aircraft, or been a diver either
Keith if the anti freeze makes water slippier for want of a better term, it will circulate faster and carry away more heat. The slippier coolant will also find any weak spot in the system and leak out where water would not. That information was for general absorption. Not for you in particular. You have some catching up to do experience wise then.
Datatek
Well-Known Member
So why is there a difference between the two types of antifreeze?Keith if the anti freeze makes water slippier for want of a better term, it will circulate faster and carry away more heat. The slippier coolant will also find any weak spot in the system and leak out where water would not. That information was for general absorption. Not for you in particular. You have some catching up to do experience wise then.
Do you mean OAT and Glycol based. Thought you said you had plain water in and the temp dropped a little with the addition of your pre mixed Frog antifreeze. Glycol based antifreeze (Bluecol etc) was used for just about everything until alloy engines became popular, OAT was developed for alloy engines. Glycol based lasts about two years, OAT about five.
Grrrrrr
Technician, Bodgit & Scarper Ltd
OAT = old age tinkerer?
tomcat59alan
Well-Known Member
Datatek
Well-Known Member
Red stuff (OAT) according to the info is also made from a glycol derivative with the addition of some quite nasty chemicals, the new stuff is monpropylene glycol based. The temperature difference is between the old red stuff/water and the new stuff.
Maybe i should have said Ethylene Glycol. Yes believe the new stuff is quite a bit more poisonous than the old stuff was. Don't know then, maybe higher concentration. Mine runs a tad cooler since i changed to OAT antifreeze.
Datatek
Well-Known Member
Yep, there is a list of plastics that it attacks.
dove
Active Member
Can't see how it's making your motors run cooler,the engine should come up to normal operating temp and stay the same ,the thermostat will keep it at same temp should be middle of gauge ,if it's started to run cooler than it used to ,your thermostat must be sticking open surely?
Littelwill
Well-Known Member
A good point tho
How can it be a good point when wax stats mostly always fail closed. Two things can go wrong with them either the spring can break (rare as hens teeth) or go weak which would make them open sooner that may cause cooler running or they can lose their wax charge in which case they do not open at all. I can't see that the new antifreeze has effected the stat spring.
dove
Active Member
So how can you say it runs cooler? The thermostat opens at a set temperature the only way it can run cooler is if the stat is not closing properly or the engine was already running hotter than the stat opening temperature
It's easy, if the stat opens early because of a weak spring the engine will run cooler. The stat works by heat expanding a wax pellet. If the spring is weak the wax pellet will push the stat open at a lower temperature. If the wax pellet bursts and the wax is lost the stat cannot open. As i said wax stats very rarely if ever stick open. It is the strength of the spring that determines the opening temperature.
