Trying not to swear... Have arrogantly ignored my ZF clunking etc for the last 2 weeks (work work work), last couple of days has been really bad, to the point that the engine revs are unstable at low revs or idle when in gear, sometimes grinding noises in 2nd 3rd 4th and so on (the typical milkshake symptoms). Lifted the bonnet at the servo today, and I have icebreak in my coolant overflow. Have reviewed a few forum posts with no 'where to nows', so to speak (including http://www.fordxr6turbo.com/forum/topic/75623-zf-auto-milkshake/) So where to now? Is my gearbox rooted, and I will def need a rebuild? OR At this point, is it possible I could try installing one of those external trans oil cooling kits, flush the coolant and trans oil, give the ZF a service (filter, clean etc) and hope for the best? Is it not even worth that work, should I just trailer it to somewhere and have the ZF rebuilt? I come here as im in central QLD with no one within 400km that can look at it.... Thanks in advance:headbang2: