I know you said new but I figure it doesn't hurt to double check... Are the spaces between the radiator fins clean?

I've done the grade going up I-80 to Tahoe which is way more than 10 miles and didn't have cooling issues... How fast were you traveling?

Off Roader
98 Montero with the Winter Package
89 Montero minty clean and reserved for overlanding trips or Cars and Coffee events
96SR (3.15:1 xcase, 35's) gone to the rust gods
96SR Build Up Thread
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