Went over to Canadian Tire tonight and they have three kinds of Rotella oil. I wonder which one would be best for my 650R? I read that many are not noticing any difference between the T6 (5W40) and T triple (15W40), but wanted to hear what you guys thought. The T5 and T6 are now on sale for $29/5L, but the T triple is only $18/5L.

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