Hi, I have a D4 2010 TDV6 3.0 litre. I have noticed that I have engine oil in my coolant overflow bottle but no water in the oil or overpressure in the coolant system and since changing my oil filer an oil leak from the top of the engine running down the right side. I have recharged the filter and seal but still leaks slightly. I am leaning towards the oil filter housing, oil cooler. My questions are is it most likely that the oil filter housing / cooler is the problem and can the oil cooler housing be overhauled with new seals and gasket as I’m in Australia and postage from the UK is more that the second hand unit. Has anyone had success in cleaning out the oil from system and coolant bottle as it was replaced last year as the float sunk and I don’t want to replace it again. I am a retired Toyota car mechanic. I have completed the following in the last two years. Thermostat housing, replaced front disc rotors, replaced front timing belt, no specialised tools needed, just 2 x 6mm pin punches, turbo oil drain modification and cleaned out throttle body, flushed ZF 6 speed automatic using Penrite ATF BMV. Thanks for any feedback.

 

Sorry, no experience with that. We don't have that motor here in the US.