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An alternative, and a good deal is Mobil 1, 15W50 in the 5 qt jug at Walmart for ~ $26-27...last time I bought it.
There's not a lot of difference in the specs/additive package between these oils per lab reports (Blackstone) that I've seen except for ZDDP (15W50 has approx. 1,200-1,300 ppm of ZDDP, vs V-Twin at approx. 1600 ppm ZDDP). ZDDP is a zinc-phosphorus anti-wear oil additive...1,200-1,300 ZDDP is plenty for v-twins from what I've read. Also, note that high ZDDP is reported to damage catalytic converters is you have one.
I used the 15W50 in my 04 Fat Boy for many miles and it ran fine. I plan to use it in my '14 RK soon...I've been using the V-Twin, but just until the factory warranty ran out.
there was a $12 rebate for a 5 qt jug, limit 2, I grabbed two and already got my check for $24. 10 qts of Mobil 1 for $26! I think that offer expires October 31st
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