Explore the Shell MIDEL Range
Three ester fluids and one regeneration service — chosen by application, never by one-size-fits-all.
The right fluid depends on the site, not on a catalogue
Selecting the right transformer fluid will depend on the individual application and location. Our long experience tells us that one-size-fits-all is a concept that doesn’t deliver the best results. The Shell MIDEL range of ester fluids offers clear and distinct benefits so customers can choose the one that best suits the specific installation and performance criteria.
Four ways into ester
Natural esterShell MIDEL eN 1204
Shell MIDEL eN 1204 is a natural ester transformer fluid made from bio-based raw materials (rapeseed/canola; 100 % bio-based carbon, ASTM D6866-21). It delivers very effective cold weather performance (-31°C pour point) and has better oxidation characteristics than soya-based natural ester fluid. The right solution for non free-breathing transformers in cooler climates.
Synthetic esterShell MIDEL 7131
Shell MIDEL 7131 is the world’s leading synthetic ester transformer fluid. Proven to 433 kV and with a pour point of -56°C, this is a robust fluid for mainstream and the most demanding environments – including extremes of heat or cold, sub-sea, underground, offshore wind and traction applications – for both sealed and free-breathing units.
Natural esterShell MIDEL eN 1215
Natural ester based on soya bean. Made from bio-based raw materials (100 % bio-based carbon, ASTM D6866-21), with the same fire safety as the rest of the range.
ServiceShell MIDEL Regen
Regeneration for ester fluid in service: used synthetic ester is reprocessed instead of being disposed of.
Ester against mineral oil
| Shell MIDEL 7131 | Shell MIDEL eN 1204 | Mineral oil | |
|---|---|---|---|
| Fire safe – K class | |||
| FM approved | |||
| Readily biodegradable ester base oil (OECD 301) | |||
| Moisture tolerance | |||
| Enables civils savings |
We help you pick the fluid, not just ship it
Tell us about the transformer, the site and the timeline. As Shell MIDEL Authorized Sales Partner Germany, MV-Lub supplies ester transformer fluids across Europe — from the first specification to delivery, retrofilling and support on site.
Talk to the ester experts
Technical questions, availability, retrofilling — write to us directly.