7. NMFThe abbreviation NMF spelled out means natural metal finishes, and when we're talking customized classic trucks it pertains to leaving aluminum, stainless steel, brass, or copper in its natural state. In the truest sense natural state means an unpolished raw form or stretching the expression polished to the highest sheen possible. Maintenance and care of polished and unpolished metals requires two completely different techniques. For unpolished metals a cleaner should be used and for polished a metal polish must be used. Whether it's a cleaner or polish the label on the product container will specify (list) appropriate use.
This should be enough information to get you started on your trucks exterior. We'll deal with interior care in next month's edition of Custom Classic Trucks.