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Cuts through rust and frees frozen components
Helps protect against rust and corrosion, even in salt water
Displaces water
Stops squeaks
Lubricates moving parts
We offer easy returns for customers. If your product is unused and unopened, you may return it within 30 days for a full refund of the purchase price. View full AMSOIL Return Policy.
We accept Visa, Mastercard, American Express, Discover and PayPal, and provide secure checkout and encrypted payment processing.
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Package Sizes
Code
Package Size
Unit Of Measure
Product
AMP4SC (AMP4SC-EA)
4 oz. Spray Can
Each
AMSOIL MP Metal Protector
AMP4SC (AMP4SC-CA)
4 oz. Spray Can
Case of 12
AMSOIL MP Metal Protector
AMPSC (AMPSC-EA)
8.75 oz. Spray Can
Each
AMSOIL MP Metal Protector
AMPSC (AMPSC-CA)
8.75 oz. Spray Can
Case of 12
AMSOIL MP Metal Protector
About this item
Lubricates moving parts to silence squeaks without gumming up mechanisms. Penetrates to free rusty parts. Displaces moisture and helps prevent corrosion. Excellent for drying electrical systems and as a penetrating oil.
I had some tools that got wet and started rusting, this stuff really helped clean them up so I use it on any kind of metal that’s exposed to humidity and moisture.
Sprayed my lock on my trailer made them very smooth
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Outstanding Rust Prevention and Metal Protection
By 
GARY L, 
a 
Verified Buyer 
from 
Tucson, AZ 
on 
November 24, 2025
I use MP For a number of applications. My favorite and most important use is on exterior metal protection on firearm barrels, and other exterior metal parts. this is the absolute best product for this use, much better than ny CLP's. It also does not discolor the parts being protected and seemingly lasts forever in storage, while not interfering with the operation of actions, cleaning or other maintenance. Basically, any metal requiring protection is THE place for this product. I have recommended it to several other folks for use on their firearms. For heavy duty use for outdoor applications, where a light yellow tint or color is not problematic, I use the HD version of the product
An awesome penetrant. Cleans metal surfaces outstandingly.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
Cuts through rust and frees frozen components
Helps protect against rust and corrosion, even in salt water
Displaces water
Stops squeaks
Lubricates moving parts
We offer easy returns for customers. If your product is unused and unopened, you may return it within 30 days for a full refund of the purchase price. View full AMSOIL Return Policy.
We accept Visa, Mastercard, American Express, Discover and PayPal, and provide secure checkout and encrypted payment processing.
Lubricates moving parts to silence squeaks without gumming up mechanisms. Penetrates to free rusty parts. Displaces moisture and helps prevent corrosion. Excellent for drying electrical systems and as a penetrating oil.
I had some tools that got wet and started rusting, this stuff really helped clean them up so I use it on any kind of metal that’s exposed to humidity and moisture.
Sprayed my lock on my trailer made them very smooth
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Outstanding Rust Prevention and Metal Protection
By 
GARY L, 
a 
Verified Buyer 
from 
Tucson, AZ 
on 
November 24, 2025
I use MP For a number of applications. My favorite and most important use is on exterior metal protection on firearm barrels, and other exterior metal parts. this is the absolute best product for this use, much better than ny CLP's. It also does not discolor the parts being protected and seemingly lasts forever in storage, while not interfering with the operation of actions, cleaning or other maintenance. Basically, any metal requiring protection is THE place for this product. I have recommended it to several other folks for use on their firearms. For heavy duty use for outdoor applications, where a light yellow tint or color is not problematic, I use the HD version of the product
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