Hindustan Petroleum Corporation Limited (HPCL) is an Indian state-owned oil and natural gas company with its headquarters at Mumbai, Maharashtra and with Navratna status

As you asking I am telling Hindustan Petroleum Turbojet is a new generation diesel, which contains multi functional additives to keep your vehicle healthier- resulting in better performance, more mileage, easier acceleration and lower emissions.

Problems with Turbojet
Blockage of Injector opening
Impairment fuel spray pattern
Unstable idling
Loss of torque and power
Reduced Mileage
Increased emissions
Increased operation / maintenance costs

Advantage of Turbojet
Keeps the fuel injector clean
Protects engines parts from corrosion
Prevents formation of fuel water emulsion
Reduces foaming
Enhances fuel pump life
Reduces exhaust emission

Refineries under Hindustan Petroleum Corporation Limited (HPCL)
Mumbai Refinery - 6.5 Million Metric Tonnes (MMT) Capacity
Visakhapatnam Refinery - 8.3 MMT at Visakhapatnam
Mangalore Refinery Pvt. Ltd. - 9.69 MMT at Mangalore, Karnataka(HPCL has 16.65% Stake).
Guru Gobind Singh Refinery - 9 MMT at Bathinda, Punjab (HPCL & Mittal Energy each have 49% stake).
Barmer Refinery -9 MMT Capacity. It is a Joint Venture with Rajasthan Government