METALGUARD® A90

METALGUARD A90 is an additive package, based on hybrid organic acid technology, that is used to make an extended life antifreeze/coolant meeting ASTM D6210, CAT ELC/EC-1, TMC of ATA RP 329, 330, 339 and SAE J1034. METALGUARD A90 is primarily a heavy-duty additive, but antifreeze/coolant made with it also meets ASTM D4985 and ASTM D3306. 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. In regard to coolant compatibility, METALGUARD A90 is compatible with most heavy-duty and light-duty extended life coolants as well as with most conventional types.

This specially formulated inhibitor package contains no phosphates, silicates, borates, nitrates or amines. Hard water deposits are minimized and pump seal life is extended as a result of the absence of phosphates and silicates. Gel formation is practically 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 METALGUARD A90 has a service life of 600,000 on-road miles, with the addition of an extender at 300,000 miles. In offroad service, including stationary engines for compressors and turbines, METALGUARD A90 antifreeze/coolant has a service life of 12,000 hours or 6 years, whichever comes first.

In heavy-duty use, it is recommended that antifreeze/coolant made with METALGUARD A90 be inspected at 90 day intervals to detect any obvious contamination, phase separation, cloudiness, precipitation, color change or significant pH change. A full analysis of the coolant in operation is recommended after at least every 300,000 miles of service, or when visual and pH checks indicate a problem.

Specifications

• ASTM D 3306
• ASTM D 4985
• ASTM D 6210/11
• TMC of ATA RP329/330/338

Nearly all of OEM automotive light-duty ad heavy-duty specifications are patterned after or identical to the ASTM standard specifications given above. For individual OEM specification compliance contact your sales representative. Note that the ASTM specifi cations listed include the key performance tests (ASTM D1384, D4340, D1881, D2570, D2809).