Im interested to know... I have an oil pressure guage thats mechanical that plugs into my sandwich adaptor on the block... and there is already oil in it from the sender entrance to the guage... im thinking tho, that the oil in this piece of 2-3m copper tubing will never reach the same temperature as the oil inside the motor... considering its distance from the heat source, the length of cooling it has by the copper piping etc...
JK