D David B New member Mar 18, 2010 #1 The manual for my 2007 Suzuki C50 Boulevard calls for a 10w-40 SJ oil. Is it safe to use an SM? Also, it doesn't specify using motorcycle/v-twin specific oil over regular car oil. Any thoughts?
The manual for my 2007 Suzuki C50 Boulevard calls for a 10w-40 SJ oil. Is it safe to use an SM? Also, it doesn't specify using motorcycle/v-twin specific oil over regular car oil. Any thoughts?
