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VoltCool™ Additives

Save time and money in Transformer Maintenance with Engineered Fluids’ VoltCool Additives.  VA products are highly concentrated packages of antioxidants and anti-sulfur treatments intended for field application in any electrical equipment.

Unlike competing products, VoltCool Additives do not require preheating or dissolving into transformer oils.  VA Products are concentrated liquid formulations, made to be added directly to insulating fluid.  When added at only 1% treatment, VA-900 will bring the antioxidant concentration of an oil back to its original level.  One or two workers can treat a large transformer in hours.  No more processing trailers.  No more preheating the oil.  No mixing and filtering for hours!  No hoses and processors to connect and disconnect, meaning far less chance of a spill!

Engineered Fluids VA-900 is a powerful liquid antioxidant which is directly added to a transformer during regular field maintenance.  Used regularly, VA-900 will prevent acid formation due to overheating and ageing.

Engineered Fluids’ VA-950 additive is specially formulated to halt corrosive sulfur issues often found in mineral oils.  VA-950 unique action actually changes aggressive, corrosive forms of sulfur in oil to non-corrosive forms.  VA-950 also replenishes antioxidant levels and prevents further damage caused by sulfur-metal salts and sludge

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Key Characteristics

VA-900 AntioxidantVA-950 Corrosive Sulfur Stop
ApplicationConcentrated antioxidant liquid for field application.Changes corrosive sulfur to noncorrosive forms.
AppearanceClear Amber LiquidClear Amber Liquid
Density@20 C.0.850.82
Fire Point, C.> 170> 300
Useful Temp Range10 – 60 C.-10 – 100 C.


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Product Resources

Safety Data Sheets

  • VoltCool VA-950 SDS (ES) - Download
  • VoltCool VA-900 SDS (ES) - Download
  • VoltCool Additive VA-900 SDS (ENGLISH GHS) - VoltCool Additive VA900 SDS
  • VoltCool Additive VA-950 SDS (ENGLISH GHS) - VoltCool Additive VA950 SDS


Will your VoltCool additives work with food grade mineral oil?

VoltCool Transformer Maintenance Additives are made specifically for enhancement of napthenic transformer oil made to IEC 60296 / ASTM D3487 specifications. Their performance in other types of base oils has not been tested, and may be affected by different chemical structure. We don’t recommend the use of pharmaceutical mineral oil, or “white oils” as dielectric coolants precisely because they have not been sufficiently processed for safe, long term use.


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We want to change the way the world cools all electronic devices and help our planet at the same time! We believe that we can reduce the energy demands and increase the performance of any electrical device that generates waste heat (which is all of them!).

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