Thread: Oil pressure drop when enigne warm
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Old 04-12-2011, 08:47 PM
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Originally Posted by Onus
Just did this mod a few weeks ago on my 91' 351w. I don't know about the 300 as i haven't looked to closely at the one in the garage. But i highly recommend the factory sender extension over say brass tube. It will make your life much easier. You can get one a jeff's bronco's graveyard and im sure many other places. My truck is right at the middle with the mod cold startup which i've heard is around 30psi. Oil Pressure Sending Unit Extension

the 300 is on the left side towards the back of the block, clear of everything. its pretty easy to get to. since the sender turns on at 7, i think i'm looking at like 8-10 warm. it hovers the white line, but doesnt cross it.

i just found out the truck has over 300,000 instead of 100,000. ugh whats an exceptable low oil pressure reading?
 
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