Plexus works...for everything. I swear.I use an old t-shirt soaked in hot water for the initial wipe down, when bug parts and juices are off, I follow up with plexus and a non-scratch cloth.
Same goes for bike windshields. Except I'd leave the wet
t-shirt over the windshield to soak.
Another vote for Plexus. Great for wind screens too.Plexus works...for everything. I swear.