Never heard of initial shear reduction being expected and normal. When I tested my Amsoil 10/40 after an 8,000 mile run to Alaska and back in my 2011 RT, it showed at the very high end of the 30 spec -- 12.06. I thought that was pretty darn good for the miles. And the V-twin is turning about twice as fast as the 1330. The wear and tear from the transmission would be the same but the engine counts in there, too. I don't like the idea of using a "blend" which is what BRP is now doing rather that their full synthetic. I put full synthetic Amsoil in my 1330 at 1,000 miles and just did it again after 3K additional. Now I'll run a longer distance (still not 9K). Maybe then I'll get it analyzed.
I used Mobil 1 motorcycle oil for about 100K in my Gold Wing and also in my 650 V-Strom. Good stuff as much as I can tell. I believe, but can't prove, my 'Wing used less oil with the Mobil 1 than when I ran Amsoil in it. That's based on how many additions I made on cross country trips. But I have no analysis or factual data to prove that. I would use it in the Spyder but it's only JASO MA1 not MA2. Since the V-twins had a few cases of clutch slipping, I don't want to take a chance on anything less than JASO MA2. Maybe the 1330's won't have that problem but I don't feel like taking a chance. I wish BRP would come out with hard, fast specs including JASO instead of just saying, "Trust us. Use our oil. It's really good."
Thanks for the informative post. And let us know how the Mobil 1 does. That will be an interesting comparison.
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