We just brought home a new (for us) 2001 manufactured June of 2000, quad cab, CTD, ETH, DEE. I ordered new filters, and will install upon arrival. We checked and topped all fluids. I cleaned up the leaking bottle. This is a 4x4 with 23,000 miles. My question is what else should I look at and check? My understanding wife, it is her truck after all, said NO bombing. She likes the diesel the way it sounds and goes. I want to be sure to cover the obvious maintenance items. Thanks