After cleaning air filter and cleaning air box,(the air box was dusty and the filter dirty),i drove about 100 miles.
Then i checked the air box and found a fair amount of oil in it.
My guess is that i put too much oil in the filter.

Any other sugestions?

 

Just realized i made a typo,it's actually a 1998 bigbear 350 4x4,sorry.

 

You over oiled the air filter that's all.