Vauxhall Astra Oil Fill Cap

What Could Be Causing This It Has Just Been Serviced And Had An Oil Change. It Has Been Running At The Right Temp. Thanks.

Engine Problem 2001 Vauxhall Astra Engine Size Unknown Front Wheel Drive Manual 58000 Miles The Inside Of My Oil Cap Is Milky White....

I Had My Head Gasket Replaced 6 Months Ago Because Of White Creamy Gunge On Oil Cap .i Have Reasently Noticed This Problem Is Still There....

Hi There I Have A Mk4 Vauxhall Astra 99 T Reg And Have Noticed A Beigey Colour Gundge On The Oil Cap And A Little On The Dipstick ,i Have No...