New Moto Guzzi Door Mats Available Now
Me thinks you have Castrol and Mobil mixed up. At least in the USA there is no 10W-60 Mobil.
You can get 10w60 from NAPA.It is made in Germany so a local shop might not have it in stock,mine came in the next morning.Cant recall the name.
Sloan's Cycles in TN used Castrol 10w50 when they changed the oil in my Norge even though the manual says to use 10w60. They said MG issued some kind of advisory that said to use Castrol 10w50 now. Bike's running fine, but Jim Hamlin in CT said no, it should be 10w60. He said 10w50 wouldn't hurt it, but it's not right. Was an advisory really issued? If so, is it online somewhere so I could see it?
My local O’Reilly auto parts story (Midwest chain) keeps this in the back. I had to ask them for it the first time. The guy said they keep it on hand for a couple Porch guys.