Lets see 100C is 212F, 140C = way to hot on both
oil and coolant!!!!!!!!! White smoke COULD indicate water in the combustion champer caused by headgasket, intake manifold gasket, cracked head, cracked block. In otherwords anything. Check
oil, is it clear or milky, is it overfilled? Check
antifreeze is it green or orange, even if brown might not mean anything is wrong if someone put stop leak in there. Whose engine, I assume original smith gauges, unlikely they would both be bad.