What are typical transformer oil filtration charges per liter or per job?

Transformer oil filtration charges vary depending on oil condition, volume, and required specs (e.g., BDV, moisture level). Service companies charge from ?0.15-0.50 per liter in Europe. If you handle regular servicing, investing in Fluidex equipment can reduce long-term costs by 3-5×. Many industrial clients now use in-house units to avoid recurring contractor charges.