Blueish white smoke

[skr]

Why whould the car be worthless? minor ring wear isn't the end of the world.
as the engine warms up the pistons (aluminum) expand more than the cylinder linings (steel), reducing the gap.

[Hypr5]

Well, the engine does run smooth and feels like it always has,
but thats something I certainly wouldn't be able to afford to fix (in terms of downtime if I were to do it OR financially for a shop), and I'm not sure there are many people who would want to buy a car that smokes like that. Maybe thats just me... I don't know.

I hope it's something wrong on a smaller scale.

[laguner]

Blue smoke only at startup is probably valve seals as stated earlier.

[632 Regal]

what oil are you using? If it's 0w-40 M1 then step up to 15w-50 if your selling it, this will significantly reduce blowby if its worn rings but I cant see that being the problem at 136k unless it was abused with shitty oil.

Well, the engine does run smooth and feels like it always has,
but thats something I certainly wouldn't be able to afford to fix (in terms of downtime if I were to do it OR financially for a shop), and I'm not sure there are many people who would want to buy a car that smokes like that. Maybe thats just me... I don't know.

I hope it's something wrong on a smaller scale.