its not a huge pool, just a little bit is in there, but i just got a compression tester from someone, so i will do that hopefully tomorrow, but i wouldnt have to worry about the afm being destroyed by oil right, i didnt relocate it.

thankyou

The sensor's optics are in the top of the unit. Unless you had oil evaporating under them or had it entering through the front and passing through the screen it's not very likely it will damage anything.

what numbers will indicate blow by with the compression tester