Antifreeze VALVOLINE or OEM Toyota

From the manual: "The manufacturer recommends using MOPAR Antifreeze/Coolant 5 Year/100,000 Mile Formula HOAT (Hybrid Organic Additive Technology) or equivalent." Remember that the Routans are really Chryslers in disguise, so no need to go exotic brands on fluids. So you can try this: Valvoline Zerex ZXGO51 G-05 Antifreeze.

Toyota brand coolant is top notch, supposedly can last for the entire life of a car and never needs to be replaced