Thanks for that lesson in oils there Gregger.

Today I went looking for Mobil 15W/50 Semi Synth, but could only find it in fully synthetic (they dont do semi). As Ray said on the phone, fully synthetic oils could cause the clutch to slip.

What should I do? Go for the fully synth of choose another brand of oil in the semi synth. Is Motul a good make, I rang a bloke from ebay said he could get the type I want for £18???