This is quite a common problem when the car has been used for short journeys so the engine has rarely attained normal working temperature, give it a good long run and check it again. Its an emulsion of oil and water because it hasn't got hot enough to evaporate the naturaly occuring moisture.

Hi Mike

Don't know to much about modern Vauxhalls, I used to run Velox's and Cresta's in the '50s but they have changed a bit since then! I'm a Citroen diesel man myself. Most cars are a lot more reliable than they used to be, although the new ones seem to be going backwards. Regular oil changes are perhaps one of the most important factors in engine life, also make sure you have plenty of antifreeze as this protects against corrosion. Otherwise, if it drives OK it probably is.

Peter

Edited by Peter.N. on 18/05/2010 at 15:44