Smoking 2.8

[Robert 99 gu]

G-day everyone I was driving along the highway the other day sitting on 110 all of a sudden the old girl started to smoke pulled over and stopped. I let rest for a while then started her up she run fine but still smoked
Got her home intercooler had a fair bit of oil in it so I cleaned out plus hoses
Air cleaner hose had come off turbo hose would this cause the problem
Checked timing all that looks ok
I have not started it since
Please help if any ideas would be most helpful
Thank you Robert