METALGUARD® A40N
Heavy-Duty Extended Service Antifreeze Inhibitor Package
25+ years in coolant additivesDecades of chemical expertise Global manufacturing and distribution
METALGUARD A40N is a heavy-duty, extended life inhibitor package containing organic acids, azoles, and nitrite. It does not contain borate, nitrate, phosphate or silicate. It will protect all engine metals from corrosion and will control cylinder liner pitting.
When blended in accordance with our instructions (see next page), using ethylene or propylene glycol meeting ASTM E1177, METALGUARD A40N produces antifreeze that can meet ASTM D3306 and ASTM D6210.
Antifreeze made with METALGUARD A40N, in heavy-duty applications, provides a service life of at least 600,000 miles with the addition of an METALGUARD A40N-EXT Extender when needed; typically, at the half-life If necessary, extender can be added when analysis of the coolant indicates that nitrite has fallen below the recommended concentration or pH has dropped significantly. For off-road, heavy-duty applications, it will provide a service life up 12,000 hours, with the addition of the extender when needed.
Specifications
Formulated to meet:
• ASTM D3306
• ASTM D6210
• TMC of ATA RP 329/338
