White paste on filler cap

gadgetgeek | 17:21 Thu 12th Feb 2009 | Cars

6 Answers

What could be causing the white paste on the filler cap and neck? It has been like that for a few years but it is not a blown head gasket. Had the engine tested and have never had a water loss but just wondering what could be the cause and cure! Thank you

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Cockney_si

This may be just condensation building up.

TWR

Hi, I would give the unit a complete service including dropping the oil flushing the systerm, take off the rocker cover & clean out.

Panic Button

It's a Vauxhall, isn't it?

gadgetgeek

Question Author

Hi. Thanks for answers so far. Yes it's a Vauxhall, a 1996 Astra. If it's condensation what can I do to prevent it? Thanks everyone.

Panic Button

How did I guess?

Probably your thermostat needs replacing, and the engine is overcooling.

Here is a similar thread.

http://www.theanswerbank.co.uk/Motoring/Cars/Q uestion699312.html

gadgetgeek

Question Author

Fantastic. That link describes what I am experiencing to a tee. Best get my coveralls on and blow the snow off my tools. Thank you Panic Button!

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