Just done an oil and filter change and want to make sure I have all seals fitted. None came with the filter and I reused the filter bowl to housing and bolt seal again with success. Is there anything inside the bowl, seal/spring as nothing fell out. The manual talks about a seal at the bottom of the cannister but if there is one I don't know what it looks like or how it fits. How is the filiter fitted, all I did was pop the filter in the bowl, offered up to the housing and fitted the bolt.