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VoltCool™ Additives

Engineered Fluids’ VoltCool Additives are highly concentrated packages of antioxidants and anti-sulfur formulations intended for field deployment and maintenance of mineral and organic ester filled transformers.

Unlike competing products, VoltCool Additives are highly concentrated, designed for use at 1/100 concentration levels. This dramatic decrease in package volume translates directly to substantial reductions in shipping, handling, and storage costs.  In addition, this generally eliminates the need to off-load and dispose of existing oil in the transformer to make room for the addition of the additive during maintenance.

Engineered Fluids VC-900 is a powerful antioxidant package in liquid form which can be directly added to a transformer during regular field maintenance.  Used regularly, VC-900 will prevent acid buildup due to overheating and contamination, thus reducing sludge buildup which leads to failure.

  • Engineered Fluids’ VC-950 additive is specially formulated to halt sulfur corrosive issues typically found in mineral oils
  • VC-950 unique action works to convert corrosive forms of sulfur in suspension to non-corrosive forms
  • VC-950 also replenishes antioxidant levels and prevents further damage caused by sulfur-metal salts and sludge
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Key Characteristics

VC-900 AntioxidantVC-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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