View Full Version : 2011 x25 tranny fluid

09-19-2013, 12:38 AM
Can someone confirm for me that the tranny fluid is 5w-30 synthetic just like engine oil. Thanks in advance!

09-19-2013, 05:33 AM
Which engine does the boat have an Indmar or Ilmor?

09-21-2013, 09:48 PM
Sorry ilmor 6.2

09-22-2013, 02:38 AM
Official line from Ilmor is that you put what the gearbox manufacture recommends into them which is ATF for all the ZF boxes.

Indmar however recommend using the engine oil in the ZF Hurth series v-drive to reduce driveline chatter due to it being a thicker oil