Coolant

TheRudeDog · Dec 31, 2016

13 on up is supposed to be OAT but with almost identical names and colors it's getting ridiculous!!

tcazes · Dec 31, 2016

Lol I did shine a light. No mystical purple color changing here lol I just ordered a couple gallons of the new stuff and plan to do a good flush. I got all kinds of trash out when draining to change my tstat. I was shocked. It needs a flush.

R.L.K. · Dec 31, 2016

TheRudeDog said:
13 on up is supposed to be OAT but with almost identical names and colors it's getting ridiculous!!

I agree , I can't believe they have both in orange ?
My wife's 16 Challenger is absolutely PURPLE .

Hipps2000 · Dec 31, 2016

Yeah Absouletly ridicoulos... I just had my 13 flushed 3 months ago when I changed my upper and lower hoses to the red silicone and put in my 180 stat. Also mine is identical to all the pics, looks orange in rad, but I am 90% its there new OAT. I also believe they mix it at the dealer in jugs so they can buy in bulk. I'll be visiting my dealer on Monday to find out for sure. I'll report back.

crash68 · Dec 31, 2016

The purple OAT that is usually more of a pink/rose color will turn back to purple when warm/hot.
You may want to warm the engine up.

BogsRam14 · Dec 31, 2016

crash68 said:
The purple OAT that is usually more of a pink/rose color will turn back to purple when warm/hot.
You may want to warm the engine up.

Very true. Adding just a little new oat in a cup its pinkish/purple the more you add can't mistake it for anything but purple oat. I also read that over time that purple turns more to a pink/orangish from the heat. Did some reading on challenger forum a owner took pics brand new reservoir purple after 2500k looked pink. Key point was If mixing Hoat with Oat is a no no.

tcazes · Dec 31, 2016

Well looks like 185 is its final resting place. The whole hour trip to work it never moved. When I floored it it climbed up to 200 but I was at 120 so time to let off of it. It quickly dropped back to 185 and never went lower. That sound right? Seems like it should cycle down to 183 or so....

R.L.K. · Dec 31, 2016

Thanks for posting that BogsRam14 !
☆☆☆☆Important note☆☆☆
I have not done any coolant system work to my wife's 2016 Challenger RT Plus with the 5.7L
☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆

This is a photo @ just uder 900 total miles as I was installing her BT OCC. Notice the absolutely PURPLE coolant reservoir .

Today @ 4,356 miles , cold has not been driven in a week and it's 38°f outside . This is the same system coolant & is absolutely the same Orange tint as my truck with 44k

My Truck 2014 Ram today @ approx 44k
Cold engine as well.

So , this is plenty proof to me that the Purple OAT coolant does in fact turn Orange with time & heat .

tcazes · Dec 31, 2016

well ill be dang. thanks for the proof!!!!

Burla · Dec 31, 2016

RLK I forget, do you have any additves or is that just Purple Chrysler Oat?

R.L.K. · Dec 31, 2016

Burla said:
RLK I forget, do you have any additves or is that just Purple Chrysler Oat?

Her car is straightfactory Chrysler Purple OAT , my truck I'm running my second application of RMI-25 , but I've never done any coolant work .

I do remember the first RMI-25 I put in my truck , my coolant wasn't this dark orange , in fact it was pink to the naked eye in the Radiator.
I guess this purple OAT does turn Orange and gets darker orange with time ...

tcazes · Dec 31, 2016

bet they didnt think that one through...oh lets make a color changing coolant that just so happens to change to the exact color as our old non compatible junk.... lol

R.L.K. · Dec 31, 2016

Anyone out there with a 2015 or 2016 Ram that will suck a bit out of your radiator , put it in a clear container and post a picture and your mileage up here ?

SyN · Dec 31, 2016

Need a bit of info for another idea/project!

Any one know the dia of our top radiator hose?

Burla · Dec 31, 2016

tcazes said:
bet they didnt think that one through...oh lets make a color changing coolant that just so happens to change to the exact color as our old non compatible junk.... lol

I'm with you, it is probably an honest mistake, but people that believe everything they hear and see from dealers should question where the stand on the Darwin Graph. I mean recalls up the ass, stupid mistakes, over priced work and mis-information is what you get with dealers. Yes, sometimes you have to go to the dealer, but 90% of the time the dealer and manu's garbage has nothing to do with your truck lasting as long as possible.

R.L.K. · Dec 31, 2016

Wonder if there's a nonvolatile Purple DYE that could be installed to make it not so damned HOAT orange ?

R.L.K. · Dec 31, 2016

I'm gonna check the wife's coolant color next time I drive it , while its hot . To see if it changes back to Purple ish color ....I doubt it will though , just something else to learn about this color changing mystery coolant

BogsRam14 · Dec 31, 2016

Another crazy thing is on mopar's black jug the only thing to tell the Hoat from Oat is on label there is
Hoat - 5yr/100k on label
Oat - 10y/150k on label MS-12106

And when color can be so easily mixed up or miss represented and the out come of mixing very bad it just makes you shake your head.

R.L.K. · Dec 31, 2016

What exactly is the BAD results when HOAT & OAT coolant is mixed ?

jotin · Dec 31, 2016

R.L.K. said:
What exactly is the BAD results when HOAT & OAT coolant is mixed ?

Cooling system gelling. Heater core clogging , radiator clogging. It gets bad

Sent from my iPhone using Tapatalk

Coolant

Senior Member

Senior Member

Senior Member

Senior Member

Attachments

ACME product engineer

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

6.7L CTD Owner

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Similar threads

Forum statistics

Share this page