At the risk of being shot down I’m looking into an easier way of decruding the engine block rather than pulling the motor apart (82 HE V 12).
To date I have rodded the radiator (new AC condenser) then fitted Tefba filters to both sides… replaced all hoses and done a reverse hose flush on the motor with the thermostats out. I use 82C (180F) thermostats so the car heats up to 80-82C in the winter and usually 83-85C in the warmer parts of the year.
I found that at 110Klm/h (68Mph) on a day of 32C (90F) it could fluctuate between 85-92C (180-198F). This is all without the aircon. I’m fitting a new clutch to the AC compressor so when this is going the temp will rise further. Thus my concern.
I feel that the only other thing I can do to mitigate any further rise in temp is to get rid of the potential crud in the back of the block.
I’ve read a lot about using various acids (acetic, muriatic, citric etc) and the risks that some pose and I am a little shy of trying them. I also read an article about using dish washer detergent as it is non-foaming and that sounded like it might be worth a go.
Can anybody comment on the use of this type of detergent and the effect it had on their flush.