Most simply fill with about 5 quarts, then do a test ride of say 10-15 minutes to at least start getting the oil up to its operating temp (but beware, the coolant will get up to temp WAAAAYYY sooner than the oil, so don't rely on your temp gauge - do the ride time! :lecturef_smilie: ) and then used the approved post-ride oil level check process, topping up with only just enough oil as is necessary to ensure that the oil level is closer to but still below the Top or Full mark on the dipstick than it is to the Low or Fill mark - do TRY NOT TO OVERFILL THESE WITH OIL!! It's a dry sump engine, and at the very least, the mess they can make if you overfill is not nice!! :shocked:
Just so long as the oil level is still above that Low mark on checking the level within a couple of minutes of riding it long enough to warm up the oil, then you've got enough oil in there to safely run the engine, and the 1330's rarely use oil, so there's never any need to over-fill or even get it absolutely exactly on the Full mark either!! :thumbup:
And do remember that it's always best to check the oil level immediately AFTER a good ride - then you know that you're ready to go next time without any risk of over-filling, unless there's a puddle of oil underneath your Spyder - cos oil can drain out of the reservoir while it's sitting, and pool in the bottom of the engine where it won't be measured when you check, so checking before a ride & topping up the oil seriously risks dangerously overfilling! :sour:
Good Luck! :cheers: