Ok quick question here the previous owner of my bike has used Motul 300v which is motuls full synthetic racing oil and costs approx 20$ a litre. Im going to be changing the oil with motul 5100 (10w40) which is what i always use in my bikes. I heard that 5100 is only semi-synthetic. Bit of a noob question but does this matter at all?? I already bought the 5100 should i jus spring for the expenseive stuff?