Added oat to hoat coolant please help

Ok I went to the local auto parts store and the guy gave me the wrong coolant. It's my fault for not knowing what I needed but I changed my fluid and put in oat coolant. Then I discovered that I was supposed to use hoat coolant and mixing the 2 even just a small amount can gum up the ports. I'm so mad at myself I would kick myself if it do any good. Anyways what can I do now. I'm figuring on draining it flushing if some and filling it with some distilled water and a jug of radiator flush driving it for a day or two then draining, flushing, and putting correct hoat coolant in it. Will this fix it or have I ruined my 2007 ram 1500 5.7 hemi quad cab? Please help. You guys have been great so far I really do appreciate all the advise on previous posts.

I would stick a pan under the radiator & open the petcock & let the fluid drain down
As the radiator drains down a bit, start pouring Tap water slowly into the radiator.

When the liquid turns clear, close the petcock & then use the radiator flush like you mentioned.
Make sure to run your engine & use the heater on high, so that you are flushing the Complete system

When you are ready, put in your 50/50 mix, using distilled water.

As to the type of anti freeze you use
Once the cooling system is completely flushed,

It truly does not matter if you were to Use
Inorganic Additive Technology (IAT), ( green stuff )

Organic Acid Technology (OAT),

Hybrid Organic Acid Technology (HOAT).

Typically, older cars use IAT. It needs to be changed every two years or 24,000 miles, making it far inferior to newer formulas

The main thing is to Not mix the types

I am beyond annoyed with trying to figure out coolant for my 3G Dodge. I came upon another forum post before this one where people were all over the map. HOAT vs OAT vs older stuff and mixing vs not, etc, etc. So here is where I am. I have a low mileage 2008 1500 5.7 that is now past due for another coolant change. Prior to this, the change change was handled by the dealer. But since they cancelled my lifetime warranty, I have no use for the dealer.

Not long ago, I was a little low on coolant and grabbed a bottle of Peak that said "Any vehicle" "Mix with any color". Now Peak has been around for years and is no mom and pop shop. Did they just make this up?? The coolant went from a nice pinky color to a gross dull greenish color after adding the Peak. So did Peak cause me to gum up my whole engine as some suggest??? Have they ever been sued for this?? Prestone has a similar product.."Any vehicle", "mix with any color". So now we have two MAJOR coolant makers who are suggesting that people ruin their engines RIGHT ON THE LABEL??!!

Something is not adding up here.

On to my current issue. What to do, since I need a coolant change anyway, what should I use?? The OAT appears to be newer than HOAT, but Dodge specd HOAT in 2008. Someone posted that the cooling system is "designed around" the coolant which would indicate that a newer formula might NOT be better. The only thing that seems clear is that I shouldn't use the old green stuff which is what the color was of the Peak that I added.

So what to do now??? And what would you base your decision on??

Generally speaking--HOAT is for "older" model Rams and OAT is for the newer models. The way you can figure it out for sure is either look in your manual or if you trust your service writer or parts guy at the dealership, ask them. I personally would not use an aftermarket product--just my opinion. DO NOT MIX different types.
Jay

Pull Ya said:

Generally speaking--HOAT is for "older" model Rams and OAT is for the newer models. The way you can figure it out for sure is either look in your manual or if you trust your service writer or parts guy at the dealership, ask them. I personally would not use an aftermarket product--just my opinion. DO NOT MIX different types.
Jay

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I have seen similar advice and know that my truck was originally filled with hoat, But that does not answer the question about why major coolant makers suggest doing exactly what you say don't do. Does anyone have evidence that this is really a problem or is this an urban myth. If it is a problem how are co. like Peak and Prestone getting away with suggesting that you mix them? As I said earlier, something doesn't add up.

Hook up a hose with a dionizer on it, use a prestone radiator kit and run it til it's clear. be careful with the run off, I wouldn't do it next to some soccer moms house. Then get a coolant tester, and set the level. You can run rmi 25 at that point, it will dislodge any gummy stuff and put it into overflow where it gets trapped.

Are they saying you can mix HOAT and OAT antifreeze together? I'm not a chemist but there are numerous reports on different Ram Forums of people mixing the two and then reporting that their cooling system became clogged and the whole system needed to be flushed out. Some reported having to replace the thermostat and water pump also. I have not had any personal experience regarding this, however, I believe that mixing these two types of antifreeze will cause problems. Follow your research and do what you think is best for your truck. This is just my .02.
Jay

Prestone and Peak have a similar product.."Any vehicle", "mix with any color". So now we have two MAJOR coolant makers who are suggesting that people ruin their engines RIGHT ON THE LABEL???

As I said earlier, not adding up.

avgjoetx said:

IWhat to do, since I need a coolant change anyway, what should I use?? The OAT appears to be newer than HOAT, but Dodge specd HOAT in 2008.

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OAT coolant started with the '13 model year trucks. Best to stick with the factory spec. If you decide to "upgrade" the coolant be sure to make labels noting the change that are easily readable under the hood and the system is completely flushed.

crash68 said:

OAT coolant started with the '13 model year trucks. Best to stick with the factory spec. If you decide to "upgrade" the coolant be sure to make labels noting the change that are easily readable under the hood and the system is completely flushed.

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I decided to stick with the HOAT as specd originally for my 08 ram. That seemed like the safest bet. One could waste hours trying to figure this out and never get consistent answers.

avgjoetx said:

I am beyond annoyed with trying to figure out coolant for my 3G Dodge. I came upon another forum post before this one where people were all over the map. HOAT vs OAT vs older stuff and mixing vs not, etc, etc. So here is where I am. I have a low mileage 2008 1500 5.7 that is now past due for another coolant change. Prior to this, the change change was handled by the dealer. But since they cancelled my lifetime warranty, I have no use for the dealer.

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That awkward moment you realize 30sec in your owner's manual would've answered all your questions......



In case you need it: https://pictures.dealer.com/tomahlchryslerdodgecllc/f7a360d14046387200fafd42297a93ef.pdf

HemiLonestar said:

That awkward moment you realize 30sec in your owner's manual would've answered all your questions......

View attachment 463542

In case you need it: https://pictures.dealer.com/tomahlchryslerdodgecllc/f7a360d14046387200fafd42297a93ef.pdf

Click to expand...

That was written in 2008. Before OAT was a thing and before two major coolang makers made "any color or model" coolant. So, more than 10 years later, what is the update?? Prestone and Peak are full of it??

Coolang lol
Does it matter when it was written? That's the OEM spec for your vehicle regardless. Get the right stuff and you won't have any worries, like a gelled up cooling system lol.

Yes. 10+ yrs matters. Things usually improve with time as technology advances. Most people stopped riding horses to work years ago. I am sure what they spec'd in 2008 was really good 10-15 years ago.

HOAT products are usually referred to as “global” and you will almost always find a label on the packaging which reads, “Meets or exceeds G-05 specifications”.

HOAT coolants are available in at least 3 variants Silicated HOAT,
Phosphated HOAT
Phosphate-free HOAT,
and you shouldn’t be mixing together even the variants, let alone the main classes.

HOAT smell & tastes Sweet, animals & children do not know that something so sweet tasting could make them very ill

Mixing the green with the orange or orange with the blue/yellow, etc. will lead to a chemical reaction in the reservoir.

As you may have noticed, color is certainly not a reliable indicator of the type of coolant that you are getting.

The only thing that the different hues are good for is to prevent the inadvertent mixing of two types of products.


OAT Coolant
Although devoid of both phosphates and silicates, OAT coolants offer similar corrosion resistance as the green antifreeze mixes.

But the anti-corrosive compounds in these solutions are slow-acting, which gives the product a longer life span.

OAT Coolant
is designed to offer anti-corrosive protection to the aluminum and nylon parts

You can't trust the color of coolant
OAT antifreeze mixes are usually orange, yellow or red but also comes in other colors, such as blue, red and very dark green, depending on the variant and the manufacturer.

For instance, FIAT uses a certain type of OAT, that should not be used in Chrysler vehicles

this is another coolant discussion


a pretty good write up on coolants

So I don’t think we’re going to get an answer about major companies making false statements about their product that can ultimately destroy someone’s vehicle someone’s way of putting a roof over their families heads clothes on their families backs and food in the families belly’s and since we all know this shouldn’t we do something or just look out for ourselves maybe the reason our planet is falling apart is because we ignore it until it directly affects us then we whine about it but still do nothing. Oh well I’m just gonna get drunk

another thing
Chevy came out with an antifreeze solution
On the label it read that it must be used on certain year chevy engines.
I believe it was called DEXCOOL
Long before that coolant supposed lifetime expired, that coolant actually ATE the head gaskets

About that same time, Chrysler/FCA/MOPAR came out with their own brand of Coolant, it is called OAT

Mopar OAT can be bought in the U.S. Market, that is the OAT that came out in 2013

There is another Mopar OAT that can be bought online, it is a OAT made for FIAT & other Chrysler products made for the European Market.

Any Chrysler product owner should avoid Anti Freeze sold by the corner auto parts store

Those other anti freeze product packages, never really state that you can use it in a 3rd, 4th,or 5th Generation Ram

Their product label is written to be vague, so they can't be held liable for messing up anyone's vehicle