ok i know i should know this but never really thought about it until I couldn't find the usual oil I put in my bike which is the Shell advance 4T 15W-50 full synthetic, well here's the thing I was checking out a RED OIL LIGHT indicator on my dash and so I figured it out as the oil pressure switch gone bad, so here I am replacing it and then I noticed my oil site glass had 2 small cracks in it so I replaced it as well. well now here's the interesting part I go on-line to find my favorite oil and it's nowhere to be found stateside everything seems to be in Europe (UK to be specific) so I asked on the Ducati 7491999 page on facebook and a few of the fellas said its ok to use 10W-60 and Motul was a good brand, so I say what the heck, I put it in and then had second thoughts 1. the grade oil 10W-60 and 2. it is RED. now I found my Shell 15w-50 again. My ultimate question is that is it ok to just keep the Motul in it and just ride it out until my next oil change or just drain it out and install the 15W-50. the manual doesn't call for the 10W-60 but rather the 10W-30,40 then jumps up to the 15W-50. Any help is appreciated and thanks ahead of time.