Ok,my mum messed up my dads car....

Hes on holiday,an didnt tell him,cuz hes gonna be pissed lol.
Problem at hand, is 20 ml of power steering fluid,into 30 litres
of petrol in the car. My lovely mother of mine,thought it was LEAD
REPLACEMENT. DUe to my dad tellling her its in the back seat of the
car. My mum,not reading the bottle,just poured away.

Now,will 20ml of power steering fluid destroy the motor?
What should i do?

I told her i dont know what to do,im getting on the net an
asking people who DO know lol.

Any advice fellas,curse my mum for putting me in a pickle!