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Oh ok so 300k miles as you say is quite expectable then? I guess here in Australia the average car (sedan,wagon etc) is driven by its first owner for 50,000 to 100,000km’s then sold, second owners drive them to 250,000 to 300,000km’s if they’ll last that long. My whole mind set for choosing the...

I would of thought being a big diesel V8 that that users expectations would be much higher than 300k on these 6.5’s? More like 500k to 700k minimum, is this not the case?

Here are the photos after the first engine was newly installed. I’m pretty sure the EGT temp probe is installed at the top of the exhaust side of the turbo. I guess if I have a full head of steam (so to speak) going up a decent hill but maintaining speed of 100km/h I can push 450C but I have...

The Car is a 2015 GU Nissan Patrol or Google Y61. It already has a 2017 6.5 Optimizer motor in it, same exact. All the undercarriage supports have been modified to suit that engine with the 4L80E gearbox. BTW I have never seen egt's go over 400*C... I like your thinking on the 7th or 8th...

Thanks for that info, do you mean never let egt's get above that or water temp? I am monitoring egt's and boost only, the engine temp is a stock Nissan gauge but shows no numbered increments but it never gets to half way as a rule..

Thankyou for your suggestions, I've been quietly reading away through all the sticky notes when ever I get a chance. I have decided to go forward and purchase a brand new 6.5L optimizer, it's a long motor, so all my periferals (can I call them that?) i.e turbo, intercooler, pumps etc will be...

Thanks for the feedback! I have added a signature now its a bit long and drawn out... I will amend that soon but at least anyone reading can understand my worries for the past 2 1/2 years... I am poised to refinance my home and buy another one but need serious help keeping on top of things, how...

I have had a fairly bad time in the past 2 1/2 years since removing the 3.0L CRD and installing the 6.5L Optimizer, Some teething problems from the moment I got it back from the installer and then a series of events that have left me here today contemplating whether or not I purchase a second...

Good day everyone I have joined the forum to hopefully learn more about the engine I have chosen in my 4x4 besides the bit I have learnt in the past 2 1/2 years. The engine in question is a 6.5L Optimizer anyone that can help me it would be greatly appreciated!