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I have an electric oil temp gauge from Autometer. I need to install an oil temperature sender somewhere. Our cars don't have one right? So, instead of drilling and welding, I was wondering if I could just use the temperature sender as my oil drain plug. I need to know what the NPT size is for the oil drain plug though. I think the most common is a 3/8" NPT, and that is also the NPT of my temp sender. Any body know the thread size on the drain plug?

 
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**** man I just did my oil today.... I get the service manual in a few days. If no one has posted ill let you know.

 
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The drain bolt is metric. What I would do is get a threaded adapter fitting for it. They sell Metric to NPT adapters... try www.jegs.com or www.summitracing.com. But make sure you get it to seal real well, and put a shroud over the wire to prevent corrosion of the connection. At the worst, you'll waste the $5.00 or whatever the adapter cost if it doesn't work. Make sure you use teflon sealing paste on all the threads.

 
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if you cant find it drain out your oil and take the bolt into a hardware store and try to find a nut that matches it so you can figure out the size...

 
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"if you cant find it drain out your oil and take the bolt into a hardware store and try to find a nut that matches it so you can figure out the size..."

Please drive a DIFFERENT car to the hardware store

Slump