7. NMF
The 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.
 The deep gloss obtained by...  The deep gloss obtained by using modern detailing products is amazing. Notice there aren't swirl marks in the finish. |  The GMC's chrome was covered...  The GMC's chrome was covered with sun-baked hard water spots. |  The fast way to eliminate...  The fast way to eliminate the most stubborn of blemishes is to use a good chrome polish on four-ott (0000) steel wool. |
 We were very careful not to...  We were very careful not to touch the paint and polished the water spots off. |  After the chrome polish dried...  After the chrome polish dried to a haze we used a microfiber towel to buff it to a shine. |  Mothers says not to use their...  Mothers says not to use their Billet polish on chrome, but we did and it added an even more brilliant shine. |