I just pulled into my drive and have a new (substantial)
I can't see where it is comming from but dripping off the rear of the driveside header any thoughts? Thanks

 

IF it is oil, most probably coming from your sparkplug tubes. The design of the intake is poor and the tubes either crack or the orings leak. Common problem and can be easily replaired by removing the sparkplugs and pulling the tubes out, snd replsacing the tubes and/or o-rings as required.

It may also be coming from a ripped bellows tube on the oil separator.

 

Dead on that is where the leak is. Thanks you.