Join Date: Jun 2009
Location: San Tan Valley, AZ
Year/Make/Model: 2009 Kawasaki Vulcan 900 Custom
Nah, you're ok. Depending on your location, it may actually be the better choice.
When i lived in the Phoenix area, i'd run 20-50 for three seasons and 10-40 during the winter. Now that i'm in a much cooler climate (upstate MN) i've reverted back to the 10-40 all year.
I'm not too familiar with the summer temperatures in Columbia City, but my guess is that during the summer, either would work fine for you. During the cooler times of year though, switch back to the 10-40, the initial lubricating qualities are better with the lower viscosity when cold.
Keep the Shiny Side Up!
'09 900 Custom SE on the Darkside
"Not all those who wander are lost." J.R.R. Tolkien