Where are you getting the MS 7170 requirement from?

MS 7170 is conventional green ethylene glycol coolant which isn't HOAT.

The owner's manual makes no mention of MS 7170 but simply Mopar 5yr/100k mile HOAT or equivalent. The G-05 is the equivalent.

No coolant could meet both specs at the same time, they're quite different.

 

Interesting!
Got it from http://www.sequentialtaillights.com/dodge/100 Challenger Tips and Tricks.htm#ChallTip47
"If you have any question about a HOAT compatible coolant, look on the container label (usually in fine print) and it will
have the compliance Spec from Chrysler MS7170 and MS9769.
IF the HOAT coolant does not comply to both spec's, it is not a direct OEM compatible coolant."

 

Is there any other reason you don't want to go with the Mopar version? It might be more money but it is what the spec's call for and no guess work. Plus how often to you have to buy coolant? If you pay top dollar for oil why would you not for coolant?

 

Why spend twice as much for the same thing? Chrysler doesn't make the coolant, they just put their name on it. Valvoline/Zerex make the Mopar coolant, save some money and get the Zerex G-05. It's the same thing. Literally.

 

The Mopar coolant I have is orange. And on that chart that would mean that it is for GM, VW and Japanese cars. Also again not trying to fight here. But do you have anything that states who produces the coolant for Mopar? Not the "Approved" version. Also are you saying that Valvoline is the distributor of coolant that Mopar bottles? And do you have proof of that?

 

Hummm, not sure what you read, but the PDF states it's only factory fill for Chrysler and Ford. It also doesn't state G-05 is for use in GM or VW...

I have another PDF from Zerex that also states the same as part of a FAQ and the question asks who uses G-05 as the factory fill.

Sent from my DROID X2 using Tapatalk

 

It's like "GM Dex-Cool." Same as Prestone Dex-Cool. GM doesn't manufacture their own fluids.

 

I guess my main question is still. Who is the maker of coolant for Mopar?

 

Valvoline/Zerex

 

From http://www.englefieldoil.com/PDF/ZerexG-05QAs.pdf

From http://www.whitfieldoil.com/downloads/ZerexAntifreezeLineupChart.pdf

Which is what I said (and linked) a number of posts ago. Factory fill means factory fill, not equivalent to factory fluid.

 

Wait, this is the same as dex-cool??? Anyone here familiar with the *huge* class-action lawsuit dex-cool cost GM a few years back because it was destroying their cars?

 

No, it's not the same. He said it's "like" GM Dex-Cool in that GM doesn't make it but it's someone else does and they put their name on it. It is NOT the same coolant as Dex-Cool.

 

Check this out...Heard Jay Leno went to this product on all his cars....boils at 369 degrees and its waterless.

Home » Engine Cooling Systems

• Boiling Point: 369° F for NPG versus 224° F for 50/50 "EGW" ethylene glycol and water (at atmospheric pressure - 0.0 psig) - benefits include elimination of afterboil and overheating, allowing temperature excursions above those for EGW, faster recondensation of vapor inside the engine, low (2.0 - 4.0 PSIG) or non-pressurized system, no coolant loss operating in high ambient temperatures, and the capability to increase thermostat temperature settings if desired.
• Molar Heat of Vaporization: 12,500 Cals/Mole for NPG versus 9,720 Cals/Mole for EGW - benefits include faster recondensation because less vapor is produced, and a reduction of hot spots because of improved liquid to metal contact. All of which eliminate the occurrence of "Film Boiling" and the accumulation of excessive surface vapor.
• Surface Tension: 35 Dynes/Cm for NPG versus 56 Dynes/Cm for EGW -- benefits include small vapor bubble sizes, allowing for faster recondensation of vapor and increased liquid to metal interface, and decreased area of nucleate boiling centers, again increasing liquid to metal interface.
• Freezing Point: -70° F for NPG versus -38° F for EGW. NPG does not freeze, it crystallizes and supercools (contracts slightly and becomes a viscous slurry).
• Toxicity: EGW is considered a hazardous waste whereas NPG is not as PG is used as a food additive and pharmaceutical base fluid.
• Vapor Pressure: 590 mm of Hg for EGW at 212° F versus 18 mm of Hg for NPG. This is the major reason for the dramatic decrease in cylinder liner and pump cavitation. Although most vehicles overheat at EGW coolant temperatures of approximately 250° F (pressurized to 13.0 psig), the non-aqueous coolant can tolerate temperatures above 350° F. Although using higher coolant temperatures can introduce other problems, (i.e.: increased oil temperatures) the NPG will allow the possibility of increasing coolant temperatures with all the resultant performance improvements as those problems are addressed and resolved. EGW is temperature constrained only by the physics of the liquid.

Over the years engineers have solved many of the problems of using EGW at the limits of its physical properties. The same can be expected to happen with NPG, allowing full use of NPG's high boiling point. Currently, however, most all NPG conversions are operated at traditional thermostat settings (180° - 200°F) with the high temperature capabilities of NPG utilized as a "safety measure".
Important Benefits of NPG Coolant:
For Gasoline Engines:

• Higher Gasoline Efficiency
• Reduces Emissions
• Higher Compression & Power
• Knock Reduction
• Improved Octane Tolerance (lower octane fuel usable).
• Reduction of Hot Spots (Critical Metal Temperatures)

 

Evans Cooling also states the following about NPG...

NPG is NOT recommended for daily drivers or cold weather operation, and may require system modifications to ensure a successful conversion.

For a dedicated track car, great. For the vast majority of us on here, not so great. Thanks for the info, though. Always good to learn about other products and options out there.

NPG is also just their formulation of propylene glycol, which is nothing new to the coolant world. The waterless part of it is different, though. PG is what folks use for winterizing RV water systems, etc, because it's generally considered to be non-toxic.