Hi James; thanks for your detailed reply. I hope the following will reassure you.
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Originally Posted by skinnyL
He also mentioned the 'EGR' ?
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I think you've got that wrong. EGR stands for exhaust gas recirculation which your car doesn't have.
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He had carried out a 'DYE' test on the radiator and there is evidence of co2 in the coolant ...
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These mystery liquids which change colour are a favourite of some garages. They always seem to give a negative result. I would not rely on them unless accompanied by other conventional symptoms.
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Plus it has creamy oil on the dip stick now ..
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OK, mixing of oil and coolant can happen in two ways on the KV6:
- Oil cooler failure.
- Head gasket failure.
The way to find out is to temporarily by-pass the oil cooler. You'll obviously have to remove all traces of 'mayonnaise' from the lubrication system and cooling system before test driving the car with the oil cooler by-passed.
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When the radiator was replaced 19/7/2019 ... the temp 84-93degC ... But after a week the engine temperature fluctuated between 94-111deg C which I feel was due and always has been to overtaking and the pressure built up with consequent coolant loss.
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No. I think it's because whoever fitted the radiator didn't bleed the cooling system properly because they didn't know about the special procedure.
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My problem is I am not aware of a Rover specialist in this area so I have to rely on my garage ...
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You've done the right thing coming to us James. We are Rover 75 specialists. You now have some advice to help you and your garage solve your problem. I hope it isn't a head gasket.
Simon