What would cause excessive blue tint smoke to come out of exhaust

A quart every 2 hours? I would be surprised the plugs are not fouled up to stop the engine from running. If that is the case, something must be very wrong somewhere.

Remove the spark plugs and check if they are fouled.
Check for leakages.

I still believe you have a problem with the valve seals. You might need to check the piston rings as well but piston rings should not be that bad, if it is so, you would have low compression readings.

If the oil rings are bad, the control rings would most probably be worn as well. However with so much oil on them there is a possibility the compression won't drop too much. Check the compression and note what they are. Anything belwo 150 psi would mean they are worn.

When installing the valve seals, did you test if they are a good fit with the valves?

With so much oil in the cylinders, it can go higher. Guess the valve seals are the main culprit. Honestly I would not believe the piston rings can allow so much oil to get to the cylinders. You should be checking the valve guides as well.

You need to shake the valves aftter removing the springs to see if they have any excessive sideway movements. Actually you need to measure them but we are experienced and can mostly gauge by feel if the guides are worn.

Excessive blue-tinted smoke from the exhaust is typically an indication of oil burning in the combustion chamber. While worn or damaged oil control rings can contribute to this issue, there could be other potential causes as well. Here are a few possibilities to consider:

Worn or Damaged Piston Rings: If the oil control rings or piston rings are worn or damaged, they may not effectively seal the combustion chamber, leading to oil entering the cylinder and burning with the fuel mixture.

Cylinder Wall Wear: Excessive cylinder wall wear can also cause oil consumption and blue smoke. If the cylinder walls are worn, it can affect the sealing ability of the piston rings.

Valve Stem Seals: Although you mentioned replacing the valve seals, it's possible that the new seals were not properly installed or that there are additional issues with the valve stem seals. If the seals are not sealing properly, oil can leak into the combustion chamber and result in blue smoke.

PCV System Issues: A malfunctioning Positive Crankcase Ventilation (PCV) system can cause excessive oil consumption and contribute to blue smoke. If the PCV valve is clogged or not functioning correctly, it can lead to an imbalance in crankcase pressure and oil getting sucked into the intake manifold.

Engine Overfilled with Oil: If the engine oil is overfilled, it can cause excess oil to enter the combustion chamber and result in blue smoke. Ensure that the oil level is within the recommended range.

Other Engine Issues: There could be other engine-related problems such as worn valve guides, a cracked cylinder head, or a damaged turbocharger (if applicable), that might contribute to excessive oil consumption and blue smoke.

That was 11 years ago so I hope they get back to you.