3rd Gen Ram Tech2002-2008 Rams: This section is for TECHNICAL discussions only, that involve the 2002 through 2008 Rams Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
OK guys, which antifreeze can I use in my 2002 Ram 1500 4.7L engine. The manual says to use Ethylene Glycol with corrosion inhibitors called HOAT. So do I use the old green stuff? what is the orange stuff sold at the stores?
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RE: which antifreeze do I use in a 2002 Ram 1500 4.7L
I strongly suggest you do NOT use Dex-Cool. It is not approved for DC vehicles. Instead, use, in decending preference, MOPAR, Zerex G05 Formula (Gold container), various long-life coolants such as Prestone, Peak, etc. that are NOT Dex-Cool clones. Also, if you don't use MOPAR, then try to flush out as much of the old coolant as possible with at least 3 or more drain, fill, runs (at least 15 minutes of driving) cycles using ONLY distilled water. If you use the MOPAR coolant, just drain the radiator and refill unless you can see obvious contamination. Then do the flush cycles as above.