Indian oil corporation have setup subsidiaries in  Mauritius, United Arab Emirates and the Sri Lanka.Indian oil entered in the petrochemical field in the year 2004 and now they are no.2 in this field for domestic products. They also have strong position in aviation fuel services which is very helpful for the Indian military (also all other defence services) and for private airlines.For motorcycles ,indian oils provides their contribution as servo lubes and grease products.

Actually Indian oil corporation has beginning from inpendence onwards.In the year 1958 Indian Refineries Limited was formed with Mr Feroze Gandhi as Chairman.And in the year 1959 indian oil comapany limited was  started and Nijalingappa was appointed as the first chairman.Finally the present indian oil corporation limited was finally founded in the year 1964. Indian oil corporation limited[IOCL] was a merge of  Indian Refineries Limited and indian oil company limited.

Avi-Oil India Pvt. Ltd.
Delhi Aviation Fuel Facility Private Limited
Green Gas Ltd.
GSPL India Transco Ltd.
GSPL India Gasnet Ltd.
IOT Infrastructure & Energy Services Ltd.
IndianOil Adani Gas Pvt. Ltd.
IndianOil Petronas Pvt. Ltd.
IndianOil Ruchi Bio Fuels LLP
IndianOil Skytanking Pvt. Ltd.
Indian Synthetic Rubber Pvt. Limited
Kochi Salem Pipelines Private Limited
Lubrizol India Pvt. Ltd.
Mumbai Aviation Fuel Farm Facility Pvt. Ltd.
NPCIL - IndianOil Nuclear Energy Corporation Limited
Petronet LNG Ltd.
Suntera Nigeria 205 Limited

Indian oil have an awesome research departments which holds 384 active patterns.Among 384 ,233 were international patterns.

With an aim to preserve india's heritage ,a non-profit was formed.It was named Indian oil foundation and started its work in the year 2000.

Also Check: Iocl latest recruitment 2016

After indo-china war (1962) the government of india realized that country needs special committed people to protect the borders.So in the year 1963 , Special Service Bureau was created with the aim of achieving Total security preparedness.Initially started with North Assam and hill-districts some states and later extended to more states.Now SSB covering 15 states which covers nearly 10,000 kilometers.It has volunteers in the range of 2 to 3 lakhs.

Through UPSC:

Recruitment  for the post of assistant commandant (direct entry) is conducted by UPSC for which notifications will be published annually. The scheme of examination, date sheet and other requirements for eligibility are mention in
the aforesaid notification.

Through SSC:

Recruitment  for the posts of SIs/GD(DE) and Constables(GD).

Through SSB:

Recruitment  for the posts of

Asstt. Comdt . (Vety)

Asstt. Comdt ./GD(LDCE)

SI/GD (LDCE)

SI/Min (LDCE)

SI  (Draughtsman)

Asstt . Sub. Insp  (Steno)

Head Const (Min)

Sub. Inspector  (Tele)

Asstt . Sub. Insp(Tele)

Const   (Tele)

Sub  Insp  (Pioneer)

Head  Const   (Elect )

Head  Const   (Workshop)

Head  Const   (Vety)

Sub  Insp(Staff  Nurse)

ASI  (Pharmacist )

ASI  (Physiotherapist )

ASI  (O.T.  Technician)

ASI  (Radiographer)

Head  Const   (Steward)

Const   (Lab.Asstt .)

Const (Nursing  Orderly)

Const   (Ayah)  Female

Const   (Driver)

Const   (Cook)

Const   (Washerman)

Const   (Barbar)

Const   (Safaiwala)

Const   (Waiter)

Const   (Mason)

Const   (Carpenter)

Const   (Painter)

Const   (Plumber)

Const   (Black  Smith)

Const  (Cobbler) & Const  (Gardener).