Green antifreeze 3 years formula

[My98RT10]

Soon I will be due for a coolant change. So far I have used the original green coolant and have not had any cooling/overheating issues. Apart from leaking coolant due to a bad timing cover gasket I have not had any leaks whatsoever. Everything is still original (radiator, hoses) and so far holding up very well.

Each time when I am due for the change I am thinking if I should change to another coolant type (e.g. the 5 years formula) but I also read articles where they recommend to stay with the original stuff. I don't fancy to flush the complete system several times to fully remove the green stuff before putting in the "upgraded" orange (?) coolant.

So I am wondering, if the majority of G1/2 owners is still on the green coolant or has moved to the newer one? Let me know what you are using... ;-)

[dave6666]

1) Type of coolant, within reason, doesn't affect the operating temperature of the car. A more important function of the coolant should be prevention of corrosion and failure of things like gaskets. Interesting that you say you've been using a less than correct coolant, and have had a gasket related failure.

2) The recommended coolant for the Gen 2 is the MOPAR HOAT orange. At $20 a gallon most people are too cheap to buy it. But quick to blame others when something fails? Not saying you are, but people constantly cheap out and then bitch at the results.

If you switch to the HOAT you should do a thorough flush. Pull the block drains before the refill. You want to get all of the green out.

[01sapphirebob]

Soon I will be due for a coolant change. So far I have used the original green coolant and have not had any cooling/overheating issues. Apart from leaking coolant due to a bad timing cover gasket I have not had any leaks whatsoever. Everything is still original (radiator, hoses) and so far holding up very well.

Each time when I am due for the change I am thinking if I should change to another coolant type (e.g. the 5 years formula) but I also read articles where they recommend to stay with the original stuff. I don't fancy to flush the complete system several times to fully remove the green stuff before putting in the "upgraded" orange (?) coolant.

So I am wondering, if the majority of G1/2 owners is still on the green coolant or has moved to the newer one? Let me know what you are using... ;-)

From my understanding you can't get the Green stuff anymore. I'll be doing a coolant flush probably next year and will be in the same boat as you. While the orange stuff is recommended, I remember what you're refering to in that the orange stuff might harm the GEN II cooling system. It sounds like dave6666 may be running the orange in his GEN II without issue so who knows if it'll actually cause a problem or not. I would replace the hoses just as a precaution. I plan to do that on my '01 next year.

[Steve-Indy]

Mopar Antifreeze/Coolant 3 Year Formula (green) is still available if you choose to use it.

[dave6666]

I've been using the MOPAR HOAT for about 15 years. I'm solid on the fact it doesn't hurt anything lol.

[71firebird400]

I drained my green, flushed the system with distilled water, and filled with the HOAT (orange) about a year ago. I did so for the improved corrosion protection. The flushing process was simple and effective-

1. I drained the radiator using the plug (not always recommended but mine came out easily)
2. Pulled the lower radiator hose to drain the majority of the block.
3. Removed both block drain plugs using the appropriate pipe wrench (5/16" I believe).
4. Re-installed block drain plugs with a wrap of teflon tape.
5. Re-installed lower radiator hose.
6. Suctioned/drained coolant from the nose-mounted coolant recovery bottle. Fill with distilled water.
7. Filled system with distilled water using a vacuum bleeder.
8. Ran car up to operating temperature with heater operating (thermostat open).
9. Repeat draining process described above.
10. Filled with 5-year HOAT coolant using vacuum bleeder.

Very simple process and for anyone concerned about bleeding air out of the system should consider a vacuum bleeder. There are a number of manufacturers out of there for less than $100; I have a Uview and it's been great. However, a compressor is necessary for operation.

[Lalmeida617]

I switched my 96 to Orange. Big plus is it will match your gages at night! Lmao.

[VOI9]

1995 Viper: I have been using the Mopar Green 3-year formula and change it every three years since new. It is readily available. There are also Green formulas from the major coolant/antifreeze suppliers, some of which are 5 year formulas.

[My98RT10]

1) Type of coolant, within reason, doesn't affect the operating temperature of the car. A more important function of the coolant should be prevention of corrosion and failure of things like gaskets. Interesting that you say you've been using a less than correct coolant, and have had a gasket related failure.

2) The recommended coolant for the Gen 2 is the MOPAR HOAT orange. At $20 a gallon most people are too cheap to buy it. But quick to blame others when something fails? Not saying you are, but people constantly cheap out and then bitch at the results.

If you switch to the HOAT you should do a thorough flush. Pull the block drains before the refill. You want to get all of the green out.

Hi Dave,
So is the green coolant no more the correct one? Has there been a TSB for the G1/G2 Vipers to switch to the HOAT stuff? I don't think that my leak was caused by the "incorrect" coolant. When I had removed the timing cover it seemed like the gasket was not installed correctly or was wrinkled at that spot already prior to installation at CAAP. I know that coolant doesn't affect the operating temperature so much. The point I was trying to make was just, that my cooling system is working properly since 21 years with the green stuff, no clogging etc. So is it then necessary to switch? That's what I am asking myself

The green Mopar coolant is hard to come by as FCA took all Mopar fluids from the market here. You only get it from import dealers. And they charge a premium. When I was browsing ebay.de lately there was a shop selling the gallon of Mopar antifreeze 3 years for more than 50€.

[My98RT10]

The dealer where I ordered the green stuff the past few times charged me 34€.

[lane_viper]

So call me a fool, but I put Dexcool in mine. It's cheap, and readily available at just about any stores.

In the research I did before making the switch, I'm not alone, as there are other Viper's running Dexcool.