Castle® Rustex™ is a stabilizer and inhibitor that neutralizes radiator coolant, preventing rust, corrosion, and scale. Rustex™ leaves no oily film usually present in most other rust inhibitors. Rustex™ also works as a lubricant to the water pump. It can be used in all types of radiators, including plastic. Rustex™ is a silicate-based formula and should not be used in conjunction with silicate free antifreeze.
1. 12 ounce bottles should be added to the cooling system every six months or 10,000 miles in automotive applications.
When handling this product wear gloves and eye protection. This is a high pH product.
C0834, C1204, C1204-5, C1204-55