DOGSTYLE,
I buy mine by the case from normally Advance, sometimes AutoZOne. If you call them, make sure that you ask them to look to see if they do have the V-Twin for some of those salemen may just not be in the know and hear Mobil 1 and not even think anything outside the regular, than later on they look and see the V-Twin also. Sort of to the dumb ones thinking well it is Mobil 1.
Also if they do not have it in stock, you can ask them to order it for you and it should be in within a few days. Recommend buy it by the case for last time I bought some, it was around $8.00 per quart and did not want to be out when the next change came due to out of stock during the riding season.
Oh many non HD shops will have it also.