R33 Gtr Piston Rings Or Head Gasket?

[_GTR_]

Hi Everyone

I just need some help with diagnosing a problem with my r33 gtr.

I was doing a oil change and when I was filling it back up with oil there was white milking froth on the funnel so I did a dry compression test and found that No2 cylinder was at 110 psi and No3 was 130 psi, after I then did a wet comp test and it when back to 150 psi like the rest of the cylinders.

On the dry test no2 cylinder didn't leak at all and stayed a 110psi for minutes. Test was done at 5 engine cranks only.

I repeated a dry compression test at 10 engine cranks and got 150 psi on No2 and 3 cylinder with 160 psi on the all the other cylinders.

Note the car has always had little white smoke on start up but not enough to worry me. I also found that 20mm of coolant is gone from the reservoir overflow for the coolant and I only fill it up 1 week ago.

Just trying to figure out if it's piston rings or head gasket

All help would be greatly appreciated

[portaz]

I would say head gasket on its way out unfortunately