08-27-2021, 09:59 AM
Up here in the deep south Ontario Canada in -25C winter and +40C summer 10W40 appears to work just fine on the ol' air cooled CB1100. I never used 10W30 non-synth during summer. It was like water (okay, once it was used).
Ultimately I ended up using 5W40 synthetic.
Ultimately I ended up using 5W40 synthetic.
