Chemical Guys SPI_402_16 Restorer Protectant Review

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Updated June 27, 2022
86 Expert Rating

Tackle oxidation on metal surfaces with the chemical guys heavy metal polish. This is one of the kitchen products that is meant to be used on stainless steel surfaces including chrome bumpers, diamond plates, and exhaust tips. Oxidation stains will be a thing of the past thanks to this polish from our list of the Best Aluminum Polish.

Why We Like It – Chemical Guys SPI_402_16 Restorer Protectant

The Chemical Guys produced a heavy duty metal polish restorer that will bring back the brilliant shine to your products. This heavy metal polish restorer is the perfect companion to any cars with specialty metal. All you essentially have to do is use a microfiber applicator and some elbow grease to restore your products. You can use it to clean kitchen devices like the one in our Decobros fruit banana hanger bronze review.

  • 16oz size will last a while
  • Works on many metal surfaces
  • More expensive than other options


Fanatics of classic cars will rave over this product since it restores a majority of metal work on their vehicles. The Chemical Guys spi_402_16 heavy metal polish will restore the high gloss of aluminum wheels and more. The only thing you need to start applying this polish and giving your products their high gloss shine is a microfiber towel. Be sure to check out other products from our list such as the California custom products purple deoxidizer. With over 16oz of product, you will be using this for a while.


This polish was made with specialty cleaners that remove contamination from your metal surfaces. You can combine this polish with the light metal polish and it will produce an even better shine. This product is meant for plate metal, chrome stainless steel, and aluminum stainless steel. If you were hoping to find a polish geared towards the kitchen and bathroom please consider checking out the flitz plastic fiberglass 1 76 ounce blister. New customers can take advantage of the chemical guys’ products and receive free shipping.


“While this product may be more pricey than products like mothers 05101 mag aluminum polish, you receive a whopping 16oz to use on your metal surfaces. This is a fantastic polish that will keep your possessions looking great with a high gloss metal shine that keeps it looking new. This polish is not hard to use; a microfiber towel is the most equipment you need to apply this product. This polish will get rid of any contamination on your products, therefore extending their life.

Chemical Guys SPI_402_16 Restorer Protectant Wrap Up

The Chemical Guys designed a good 16oz bottle of polish that cleans surfaces including gold, silver, and chrome. While the polish is more expensive than other similar products, you receive a bigger bottle compared to other competitors that offer smaller sizes. Restore the brilliant shine of your car’s bumper, exhaust tips, and more metal surfaces.

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