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You must have read my mind! Yes, I plowed around egauges site and in fact emailed them a question to clarify and was told that the 300 deg oil senders will work with VDO gauges. And I also came to the conclusion after talking with local Volvo parts dept (that plug sender is so old, no parts numbers exist now) that my easiest solution was to get a replacement oil drain plug and an egauges sender and have a friend drill and tap the drain plug for the egauges sender. I chose the sender with the longest temp probe tip so it will extend beyond the end of the drain plug into the reservoir of oil for a bit more accuracy. I chose the 1/4 NPT thread sender. The local parts house got me a plug and their book also said 3/4 x 16 so I'm all set. I'll visit a friend at his machine shop and have him do the drill and tap. I'll be sure to put a small bead of silicone around the very top of the sender threads when I tighten it in to be sure of no leakage. That will ensure electrical path to ground with the plug and pan since the sender will never be removed, only the plug. Then just a matter of running wire from the sender to the cluster and the gauge. Hoping for simplicity and no "Murphy's Law" interference. Thanks for your input! BTW, I'm still looking for the actual oil pressure gauge for that cluster spot but if I can't come up with one, I'll probably just put an egauges side window post oil pressure gauge kit in.
Roger
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'85 240 DL B230F 4spdOD 330K; '87 740GLE B230F ZF22 340K
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