KATHMANDU: Delta Auto Service Centre Pvt Ltd — the authorised service centre for Sipradi Training Pvt Ltd — is organising a free check-up camp for its customers from March 11 to 13. The company is offering 20 per cent discount on lubricants, 15 per cent discount on spare parts, special discount on Exide battery, tyres and tubes and will offer gifts to all customers visiting the camp.