Well, my guess would be the oil is thicker when cold, forming a better seal around the rings. Also, with the block being aluminium but with steel liners and pistons, they expand at different rates. But it's a guess.
Certainly I've owned cars in the past which would smoke like you describe. I vividly recall an old blue cavalier which did the same. I used to live on a hill, and so coasting down the hill and then hard acceleration back up again would leave plumes of blue smoke behind me to rival a James Bond escape. I presumed it was the bores filling with oil which then got burnt off. But again, it's just a guess really.
Still, it wasn't so bad. Scrapped it and got the SRi. Wheeee!
|