Question: After how many kilometers is the gear oil changed and what is the benefit of synthetic oil?
Answers: Gear Oil or Transmission oil is a Multigrade oil (SAE 75W85W or SAE 80W90) which is replaced every 20,000 kms or as per the manufacturer preventive maintenance schedule. It is replaced every 20,000 kms or 18 months whichever comes earlier in Tata Indica Petrol , Diesel or every 20,000 kms or 24 months in Maruti Ritz, Swift etc. In Automatic Transmission, it is changed every 10 years or 1 lac kms whichever is earlier as in GMI vehicles depending on OEM recommendations. Synthetic gear oil are generally multigrade multipurpose additive oils aimed to deliver supreme performance & designed to meet the highest level of performance requirements of modern passenger vehicles in all types of operating conditions, including limited slip applications, as well as delivering outstanding power transfer performance. Using them enhances the life of the Transmission & smooth shifting of gears.