[NssJ]

Hi, its been a while since I've had a Chrysler product, but you were all very helpful last time, so i'm back.

Just bought a 98 Chrysler Sebring convertible with 2.5L Mitsubishi v6 and I'm racking my brain trying to figure out best coolant for it.

It currently has "green", which could either be silicate-phosphate IAT, or non-silicate like Peak. I plan on having coolant exchange machine run 10 gal of distilled water throught it til clear; then change water pump fill with full strength _____ coolant and test freeze point/adjust mix.

Owners manual says "ethylene-glycol with silicate inhibitors" (IAT?), but I'm not sure I trust manual. It doesn't seem to differentiate between an American i4 & Japanese v6. It completely neglects to mention timing belt interval for v6, lol.
I checked my friends Mitsu, also filled with unk green & vague manual states "ethylene glycol" only.

I know I don't want OAT; already have an S-10 with erroded intake manifold gasket headache. Also unsure if Chrysler used dissolveable gaskets, or brass/copper radiator or thermostat, etc. So without a very great reason, please leave OATs off the table.

So IAT vs HOAT, and best brand i can find anywhere, not just dealership please. I want to understand why I'm choosing 1, adds peace of mind.

Priorities:
1. Does not eat Japanese water pumps! I don't like fwd timing belt work nor cost since don't wanna do it more than needed.
2. Protects aluminum engines great. Anything to keep head gaskets alive as long as possible & not eat engine long term.

I don't care about change interval, I stay on top of maintenance. Coolant price doesn't matter in long run, but easy availability helps a lot.

Mitsubishi dealer recommended "Blue". I'm guessing Zerex Asian blue, but haven't found specs on it yet for what it actually chemically is.

I saw 2.5L overcooling thread here state HOAT a few times, but no details why exactly.

I'm not in a rush. I wanna take time to take good care of this car so it lasts until I'm bored with it, not gone by an expensive death.

Please give details on why 1 coolant type protects difficult to repair parts better than the other, and what brand you recommend.
Thanks, J

 

[ImperialCrown]

I also have a '98 JX w/2.5L. I replaced the w/pump and radiator a few years ago. The car is only driven in good weather.
I used the Peak Global lifetime. It is what we used at the dealer and it should cover pretty much all bases.
I feel that the green antifreeze is mostly obsolete, except for cast iron engines and old brass/copper/lead radiators.
The newer coolants are formulated for aluminum protection, which is what you want on newer engines.
Global Lifetime 50 50 Antifreeze & Coolant from PEAK Auto (at http://peakauto.com/products/antifreeze-coolants/automotive/global-lifetime-50-50/ )

 

[manybrews]

any common ethylene glycol coolant will be fine. Still need to flush it every 30k because of the iron block/aluminum heads.

 

[AC TC]

Zerex G05, Motorcraft gold, Volvo blue, John Deere coolguard...( not cooolguard 2! )
All HOATs like mothers HOAT.

 

[Crawdaddy]

The best coolant currently out is Caterpillar EC-1 rated. Protects metals better than any of the other coolants out.

Here is an example: ZEREX Antifreeze Coolant,32 oz.,RTU - 4NPP7|ZXEDX3 - Grainger (at https://www.grainger.com/product/4NPP7?gclid=CjwKEAjwqZ7GBRC1srKSv9TV_iwSJADKTjaDungFMfmlLzlUF7TMJqawx0XqFGRKPmqxtjPExyNTTxoCYcHw_wcB&cm_mmc=PPC:GOOGLEPLAA-_-Fleet%20and%20Vehicle%20Maintenance-_-Automotive%20Chemicals-_-4NPP7&AL!2966!3!50916716757!!!g!82665746037!&s_kwcid=AL!2966!3!50916716757!!!g!82665746037!&ef_id=V-QZ5gAAAcGnuMt9:20170314194827:s )

 

[NssJ]

So most votes for HOAT. Going with Zerex Asian blue Mitsubishi spec after a good flush.

Will try to remember to update this thread down the road when I have some experience with it; compliments, concerns, or neutral experience.
Figure it's worth sharing experiences to help others take care of their aging Mitsubrings long term. A lot of info on this car seems hidden or skewed. I'm assuming because a lot of people don't seem to know its a rice burner / luxury American hybrid...