OAT anti freeze

bushwwacker said:

There are some decent looking recipes on there.

Just a question though, What is 'Hot Sauce'? is it just hot (chilli) sauce like tabasco or is it summat different?

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Yes tabasco goes by lots of different names. But hot sauce is the generic name

bushwwacker said:

As I said, OAT and Ethylene Glycol and Methanol are different and shouldn't be mixed.
The colour is no indication of the composition (other than as a rule of thumb).


https://www.google.co.uk/url?sa=t&r...=vxhoqByHgzbo_E7HsV6DqQ&bvm=bv.56343320,d.ZGU

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rule of thumb is 1", used a trade standard in uk, left from roman rule

discool said:

Old engines? we didn't use antifreeze in the summer months

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i had a quick google and couldn't find a decent source so who knows if it's true, but:

Recently problems have been reported concerning the use of antifreeze mixtures using Organic Acid Technology (OAT).

OAT was introduced in the mid-1990s and the products are biodegradable, recyclable and do not contain either silicates or phosphates and are designed to be longer lasting.

However these products do seem to cause problems in older engines; over and above the ability of antifreeze to find the smallest crevice and leak, OAT antifreezes have been accused of destroying seals and gaskets and causing a great deal of damage in ‘old’ engines.

For this reason the manufacturers of OAT antifreeze products do not recommend their use in historic and classic vehicles.

It is no longer true.
Yes it used to be the case that mixing OAT & EG actually caused the mix to turn to jelly, but that hasnt been the case for several years. It is OK to mix technologies, but why - one is an expensive long life product that will be compromised by mixing.

It is best to drain and refill with one type.

as you said, colour is a useful guide, but not foolproof.

there is a more detailed guide in the CFAQ section.

When I changed over to OAT I drained the system refilled with water run the engine let it cool drained refilled run the engine let it cool etc etc total of 4 times, so flushed out all the Rover antifreeze and then refilled with OAT maybe over kill.... but what else is there to do on a Saturday morning.

The question is why would anyone wish to mix OAT with their existing non OAT antifreeze>

discool said:

When I changed over to OAT I drained the system refilled with water run the engine let it cool drained refilled run the engine let it cool etc etc total of 4 times, so flushed out all the Rover antifreeze and then refilled with OAT maybe over kill.... but what else is there to do on a Saturday morning.

The question is why would anyone wish to mix OAT with their existing non OAT antifreeze>

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running low and only have non oat to hand. bought a vehicle with oat and are too cheap to get the proper stuff. they are clueless and don't know any difference.

trax said:

running low and only have non oat to hand. bought a vehicle with oat and are too cheap to get the proper stuff. they are clueless and don't know any difference.

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:tea:

trax said:

running low and only have non oat to hand. bought a vehicle with oat and are too cheap to get the proper stuff. they are clueless and don't know any difference.

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Damn, that'd be me then - had about 3 litres of antifreeze in the shed. I read the label and it said does not contain methanol, so I've been using it as a top up.

DIFFLOCK66 said:

Damn, that'd be me then - had about 3 litres of antifreeze in the shed. I read the label and it said does not contain methanol, so I've been using it as a top up.

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i may or may not have done exactly the same thing

janderson41 said:

.... on a visit to B&Q today noticed that they now have a large section of motoring stuff. mainly cosmetics. In amongst they have bottles of Orange coloured A/F as well as blue A/F....
(gone)

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The A/F in B&Q is "Premixed with deionised water IIRC" so beware, imade this mistake a few years ago. I put it in a car with water to get a 50/50 mix, what I actually got was about 10%

fyi, eurocarparts on one of there never ending sales was the best price last time i needed any.