Peter,you obviously have a better idea about timber preservation being a carpenter to trade.
Personally I would think the Valspar would be the better option simply because that's what it's designed for.
I would imagine clear coat while it would look good, wouldn't be anywhere near as hard wearing.
I'm not sure what your intentions are regarding the trucks use,but I imagine the Valspar would stand up better over time.JMO

Last edited by jockbolter50; 08/15/2012 2:30 AM.
1950 Chevy Advance Design 3100 in Scotland
In the Stovebolt Gallery
More pix on Flickr.
I've definately got this truck thing in my blood ... my DNA sequence has torque settings
"Of all the small nations of this earth,perhaps only the ancient Greeks surpass the Scots in their contribution to mankind" Winston Churchill.