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  #49  
Old 06-04-2015, 08:54 PM
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Well, I definitely know what the purple stuff looks like when fresh now. It's certainly not the color the 18 month old factory coolant was. EDIT: because the factory OAT is red, and the service OAT is purple. I'll have to take some pics to watch how it ages.

Also, they horribly overfilled it (the coolant reservoir is practically overflowing). Any suggestions for storing the excess after I siphon it down to a reasonable level? I can do that any time while the engine is off without concern regarding false min/max readings, correct?

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  #50  
Old 06-05-2015, 12:31 AM
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Re: Brown sludge scum in coolant bottle.

The coolant color should not change drastically, my factory fill was always a orangy pink from day one, not the purple it was supposed to be.... Until I changed it..... When your systems cools it will draw some of the coolant in your overflow tank back into the system and it's level will drop some.... Its best to check the level when the system is cool.... You can syphon fluid out if the overflow tank at any time, engine running or not, hot or cold, but for safety concerns, I would do it when its not to hot, so as not to accidentally get burned....
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  #51  
Old 06-05-2015, 12:45 AM
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I've decided to give it a week before correcting it (planning to save the excess, of course). From what I've read, the worst that can happen is the reservoir indeed overflows and makes a mess.

I don't have the kind of kids or pets that would be potentially attracted to licking interesting puddles on the garage floor.
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  #52  
Old 06-05-2015, 03:32 AM
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Wow, this purple shit is weird. The reservoir looks like it has purple liquid when viewed from outside, absorbing a bit of the stuff with a paper towel turns the paper towel purple, but looking at the liquid straight on from above (with the cap off) it is vivid *orange*.
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  #53  
Old 06-05-2015, 04:48 AM
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Quote:
Originally Posted by Roadkill View Post
Wow, this purple shit is weird. The reservoir looks like it has purple liquid when viewed from outside, absorbing a bit of the stuff with a paper towel turns the paper towel purple, but looking at the liquid straight on from above (with the cap off) it is vivid *orange*.
Yeah it is definitely different looking out of the overflow container. You reallygot to put a drop from the jug you bought and the overflow onto a piece of white paper to compare colors. Mine looks orange in the overflow but is actually purple when compared.
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  #54  
Old 06-05-2015, 05:23 AM
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Originally Posted by silvermax04 View Post
You reallygot to put a drop from the jug you bought and the overflow onto a piece of white paper to compare colors. Mine looks orange in the overflow but is actually purple when compared.
Makes sense, but the dealer replaced my coolant unexpectedly so I don't have before/after pics. Or the bottle it came in. I am glad to hear your purple appears the same "orange" way when viewed directly, because I think my Dec 2013 build came from the factory with the old, orange stuff. EDIT: nope, it was just the factory OAT (which is red) rather than the service OAT (which is purple).

At the very least, my reservoir used to be orange/reddish with the factory fill and now it is distinctly purple. If this stuff doesn't really change color as it ages, then I didn't have purple before.

Seeing orange when looking at the top of a purple refill left me concerned about the possibility of an incomplete drain followed by mixing of the two incompatible types when it was refilled with the correct purple coolant. EDIT: nope, the two forms of OAT are compatible, and the purple stupidly looks orange when viewed in the reservoir from right above.

Here's what I mean. These are both shots of the purple coolant, taken seconds apart.


Striking, isn't it?
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  #55  
Old 06-05-2015, 06:30 AM
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Now my previous observation makes sense. It seems FCA went full retard when they decided to switch from HOAT (orange or pink) to OAT (red or purple).


"Because there are only three possible colors in the universe, let's make sure we choose shades of those three colors that look almost identical in order to represent fundamentally incompatible coolants!", said the FCA braintrust.

At this juncture I believe my Dec 2013 build came from the factory with the "production part" OAT, which is red (i.e. top right). That seems consistent with what the reservoir looked like prior to my service coolant replacement. The "service part" OAT is purple (bottom right). These two OATs are compatible and can be mixed, but they obviously are different colors. The OAT coolants are *not* compatible with the HOATs, and the production OAT from the factory is strategically designed to be almost exactly the same color as the HOAT coolants that can damage your engine if mixed together with OAT.

...and to top it off, the purple looks orange if you view it from above by peering into the reservoir.

WTF were they thinking?!
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  #56  
Old 06-05-2015, 07:14 AM
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Quote:
Originally Posted by Roadkill View Post
Now my previous observation makes sense. It seems FCA went full retard when they decided to switch from HOAT (orange or pink) to OAT (red or purple).



"Because there are only three possible colors in the universe, let's make sure we choose shades of those three colors that look almost identical in order to represent fundamentally incompatible coolants!", said the FCA braintrust.

At this juncture I believe my Dec 2013 build came from the factory with the "production part" OAT, which is red (i.e. top right). That seems consistent with what the reservoir looked like prior to my service coolant replacement. The "service part" OAT is purple (bottom right). These two OATs are compatible, but obviously are different colors. The OAT coolants are *not* compatible with the HOATs, and the production OAT from the factory is strategically designed to be almost exactly the same color as the HOAT coolants that can damage your engine if mixed together with OAT.

...and to top it off, the purple looks orange if you view it from above by peering into the reservoir.

WTF were they thinking?
LOL you are right what were they thinking. My 2014 was a march 2013 build date. I get the same effect look down on it looks orange to the side it looks pink. my over flow container came low from the factory so i bought a gallon of OAT to top it off. The gallon i bought looked purple. So wasnt until i took a drop from the overflow and drop from the jug onto white paper did i see that they actually matched. It is mental whoever came up with those colors, then combine that with the fact that prestone labels their fluid as "mix with any color fluid" when its not compatible with FCA OAT and you are going to have a lot of confused people putting the wrong stuff in. Especially when a lot of our jeeps are coming low on fluid from the factory. Kind of a mess just like what they did with the navigation map updates lol
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  #57  
Old 06-05-2015, 09:11 AM
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Re: Brown sludge scum in coolant bottle.

So.....2013 Onwards OAT (MS-12106 purple coolant)

Here's what you need :
Straight Coolant:
Part number : 68163848AA CONCENTRATE ANTIFREEZE/COOLANT
50/50 Mix:
Part number : 68163849AA ANTIFREEZE (50/50 MIX)
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Old 06-11-2015, 08:08 AM
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Re: Brown sludge scum in coolant bottle.

I have a 2015 Hemi, ordered and built 3/26/2015.

The coolant looking in the overflow is orange color,I am aware they switched from the older yellow(Zerex) or Orange mopar HOAT.

Asked my two pals who work at local store and they said it is definatley OAT and it just looks orange in the overlflow and when you change it to use OAT and distilled water.
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  #59  
Old 06-11-2015, 09:04 AM
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Quote:
Originally Posted by Turbozcs2003 View Post
I have a 2015 Hemi, ordered and built 3/26/2015.

The coolant looking in the overflow is orange color,I am aware they switched from the older yellow(Zerex) or Orange mopar HOAT.

Asked my two pals who work at locali store and they said it is definatley OAT and it just looks orange in the overlflow and when you change it to use OAT and distilled water.
I have a 14 hemi and it just has that orange look in the overflow container. If you take drop out put it on white paper it will look lite purple.
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  #60  
Old 06-11-2015, 10:49 AM
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Re: Brown sludge scum in coolant bottle.

Quote:
Originally Posted by theweavman View Post
Never heard of a preasure leak down Pill, I've seen systems preasurized with guages to check for leaks etc... What does a pill show???? And how????
My SRT manuel, calls for OAT coolant, the dealers parts man checked my VIN and it indicated that my JGC should have come from the factory with OAT coolant installed, yet it appears my jeep came with the orange/ Pink coolant installed "HOAT" coolant, and not the Purple "OAT" coolant, and it also had the muddy sludge in my systen.....
When it's done at the factory, it's usually an attempt to cure a small leak in the engine block. GM sites are full of this kind of thread, especially on their aluminum engine blocks. Some there claim that GM installs these "pills" on the Northstar Cadillac aluminum engine.

Those "pills" are usually a radiator stop leak product similar to those from companies like Bars Leak. Not what I want in a new engine and vehicle.

I've read of Chrysler using silicone in some marginal aluminum engine blocks in the cooling passages in years past, to stop small leaks because of slight porosity problems, so it would pass their leak tests.

The problem with that is that years later, when the silicone washed out, the owner was faced with the leak again, usually on their own.

That is IMO something that should never be done. I hope that FCA isn't stooping to this kind of practice on engines that fail the leakdown test at the factory.
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