Can you tell me the tollerable temperature limits of oil cooled three phase transformer ?

i want total information which contains temp. limits and voltage limits ?Can you tell me the tollerable temperature limits of oil cooled three phase transformer ?
it depends on the size of the transformer. can you be a little more specific?Can you tell me the tollerable temperature limits of oil cooled three phase transformer ?
If you already have the transformer look on the nameplate/dataplate. Failing that go to the manufacturer.
its should trip before Temp reaches 85 degree Celsius or else its not good for the oils life