so i have a build up of white film on my dipstick and in my oil filler tube i cant see water having got in there and i checked to see if my brake booster is getting fluid sucked out into my engine and its fine can anyone think of any other causes?

 

Do not worry.
It is a normal thing to see what they call "lung mustard" on the filler cap of the Oil tube.
It is Condensation film.The engine heats up and cools down and it creates a little condensation.It mixes with the oil vapors and shows up as that "White Goo".

 

This happens mostly when driving short distances. If you drive for longer periods en the engine heats up really good it has to go away.

 

Almost every type of internal combustion engine does it. Had an Rx8 customer flipping out about that one time. lol.

 

It's worth making a quick check of your purge valve just to make sure it is functioning properly though. Only takes a few minutes. The procedure is in the Haynes/FSM.

 

wicked thanx