FYI- I was checking out VDO gauges and found on "egauges.com" a VDO
oil temp sender that can thread into your
oil pan drain hole (my recent truck 460
oil pan uses Metric drain plug 14mm x 1.5 threads) yours may be different. The VDO part number for this temp sender is 323-055 and is $9 plus shipping. The oil temp gauge in "Cockpit Style" or Vision Style is cheap too @ $25. You can also get the temps from an oil cooler if you've installed one.