andrewwales666 Posted December 29, 2014 Share Posted December 29, 2014 Hi all, im a complete novice and this question will seem stupid but here goes.my last car"s expansion bottle cap had a pipe from the rad and another going out,(i presume to release eccess water,but on my starlet the cap only has the one pipe from the rad,why is this please. regards andrew Quote Link to post Share on other sites
akyakapotter Posted December 29, 2014 Share Posted December 29, 2014 Because the expansion bottle holds it and a vacuum takes it back into the rad when it is needed. Quote Link to post Share on other sites
andrewwales666 Posted December 29, 2014 Author Share Posted December 29, 2014 ah,easy when yiou know lol,many thanks Quote Link to post Share on other sites
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