METALGUARD® A90

METALGUARD A90 is an additive package, based on organic acid technology, that is used to make an extended life antifreeze/coolant meeting ASTM D6210. METALGUARD A90 combines two organic acid inhibitors with azoles, nitrite and molybdate. This combination of inhibitors provides superior protection for all engine materials of construction, including steel, aluminum, cast iron, copper, brass and solder. Additionally, the inhibitor package provides outstanding cylinder liner cavitation/pitting protection through its combination of organic acids and nitrite. It is compatible with all commonly used plastics and elastomers found in gaskets, washers, seals, hoses fittings and other non-metallic parts. Regarding coolant compatibility, METALGUARD A90 is compatible with most heavy-duty extended life coolants, including CAT ELC.

This specially formulated inhibitor package contains no phosphates, silicates, borates, or nitrates. Hard water deposits are minimized, and pump seal life is extended as a result of the absence of phosphates and silicates. Gel formation is eliminated by METALGUARD A90’s silicate-free formulation.

The combination of aliphatic mono-acids and di-acids used in METALGUARD A90 eliminates the need for traditional supplemental coolant additives (SCAs) in heavy-duty use and provides extended coolant maintenance and change-out intervals. With a proper monitoring program in place, antifreeze/coolant made with A90 has a service life of 600,000 on-road miles, with the addition of an extender at 300,000 miles. For off-road service, including stationary engines for compressors and turbines, A90 antifreeze/coolant has a service life of 12,000 hours or 6 years, whichever comes first.

Specifications

Formulated to meet:
• ASTM D3306
• ASTM D4985
• ASTM D6210
• TMC of ATA RP 329/338