Top of engine oil leak Options

[EdwardBlume]

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After the drive home last night, my oil pressure idiot light went on, and I noticed oil on the back window. Opened the engine compartment and there's oil everywhere. Looks like the oil pressure sender on the top of the engine is wet.

Is this my likely problem? What size MM socket does it take?

Thanks,
R
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[airsix]

When the oil sender is still in place and has not lost its center wiring plug, it is unlikely that it is the cause of the problem.

Don't rule it out though. I've had two oil pressure senders do this to me over the years. They look fine other than being a little wet (like everything else around them) and don't show any signs of leaking and in fact didn't leak at all at idle, so looking for the leak with the engine running did no good... But as soon as the revs and pressure came up oil was going everywhere - it can be deceiving because the oil will also run down over the oil cooler and filter making you think it's the cooler or the distributor seal, or the filter seal, etc. My money's on the oil pressure sender.

-Ben M.