I know this sounds extremely pikey, but it's just until I get a new one. It's pissing oil out and it's costing an arm and a leg in oil. Can I just unbolt the rocker cover and take a look? With a view to making a quick repair until I get a replacement gasket?

And do those £7.50 butyl rubber ones work?? Ebay link: http://cgi.ebay.co.uk/Cosworth-Rocke...QQcmdZViewItem

Too good to be true?