Break-in Period for Rebuilt Engine

[DieselScout]

The pistons/rings are from Kolbenschmidt.
.5mm oversized. Block was bored and honed at machine shop.

I made sure all of the rings were orientated correctly/offset from one another.

Cylinder was cleaned with break cleaner and then assembly grease was added to facilitate easier piston install.

I used Amsoil break-in oil, initially.
The car was idling for a while after start while diagnosing a coolant issue. Temperature got as high as 210F. (turned out to be a faulty, DOA thermostat) not sure if that would really affect the break-in detrimentally.

No oil in coolant reservoir and no bubbles through water test.
Oil pressure and temperature are within normal range.

Coolant and EGT temperatures also within normal ranges.

I applied the double-nut technique to the VC studs and reset the cap (I believe the cap gasket leak was because it wasn't seated properly)

The car was producing a blueish haze the past week until I applied the Kano Kreen. The smoke has diminished significantly, but it still produces some white smoke on initial start-up and when going from 1st to 2nd gears. This engine is not producing nearly as much smoke as I'd expect for such high oil consumption and produces significantly less smoke than the engine that I replaced. (which burnt 1qt for 650 miles)

[DieselScout]

Finally found the issue of the oil consumption...

Turns out the machinist I sent the block to last year did a poor job boring and honing the cylinders.
Unfortunately, I didn't have a "base line" for what freshly bored & honed cylinders should look and feel like as this was my first engine build,
otherwise I could've had it fixed before I did the initial engine assembly.

According to the new machinist, it was bored too large for the .5mm oversize, it was slightly oblong and too coarse.
After 5,000 miles of driving, the honing was still extremely rough, which caused significant piston ring wear.

The block was corrected with a 1mm overbore and re-honed.
Engine reassembled and in the past 800 miles, the car seems to have only burned a little, if any oil.

Fingers crossed, but I think it's working AOK.