0psi oil?!

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2003 Mazdaspeed Protege
I was in the Tim hortons line up tonight getting a coffee, when I looked at my oil pressure gauge reading off 0 and bouncing to 2-3psi. Instantly shut off my car and check underneath no leaks so I drove it home. Worked fine, just don't know why it would've dropped to 0psi ?! Anyone know??
 
im doing that now, i dont think itd be a bad gauge... its a aem digital. still, id rather the gauge be off then something in my car.
 
nope, just the oil pressure was down man. i wouldnt have even driven it home if that wouldve came on.
 
if the dummy light didn't come on id say something is wrong with the gauge/sensor. The dummy light is designed to come on at i think 5 psi? you could have a clogged sender or it could be bad. Either way not really easy to test without taking something apart.
 
Probably not a huge deal. What oil are you running? It has been hot out the past few days.
 
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