Is it a 2.8? I think they had a bit of trouble with the engines using oil, a few were replaced.
The shape before, the RC Colorados have all Isuzu running gear and are pretty bullet proof, parts are cheap as you get them through Isuzu. I've got a 2010 or 11 4x4, can't remember, and it has been a good truck.
Personally I'd skip the model you're looking at and either get an earlier one or a newer shape one.
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