make sure you pour what is stated for use, Nissan Matic D is very close to the obsolete DX3 fluid from GM. If the fluid is not dark and smells sweet then its ok for use, change it every 40,000 kms if you drive in the city a lot. and always check the hot level on the dipstick after driving at high speed for atleast 25 kms. - Never ever overfill it.