Here's where i hit a wall and need to seek advice ... The Oil light lit up on my new Blade the other day, on advice from a not so convincing so called specialist i have bought castrol 10/40 or maybe that's the other way round to top up.

The litre bottle didn't even seem to touch the sides and has me thinking i'm reading the levels wrong and have now put too much in the thing ? And maybe even not the right stuff ? Or maybe it does actually hold more than that and does actually need more ?

It's due service on friday so will be all sorted properly then, but just need to make sure, i don't blow the thing whilst riding it in the meantime...

Any help appreciated :-/