There has been questions and a little confusion about Corn Syrup, so I checked good old wikipedia (which always has the answer!). Corn Syrup (which is made from the starch of maize) is actually good according to here http://en.wikipedia.org/wiki/Corn_syrup as Corn Syrup is made up of glucose. However High Fructose Corn Syrup has gone through a different (enzymatic processing, which means they are changing the molecules) process to convert some of the Glucose to Fructose http://en.wikipedia.org/wiki/High_fructose_corn_syrup. High Fructose Corn Syrup is only produced because it's sweeter then plain old Corn Syrup. Corn Syrup is used in foods to soften texture, add volume, prevent crystallization of sugar, and enhance flavor. So basically they are two completely different things.
David please correct me if I'm wrong.
I did also find a mayonaise which has corn syrup in it (thinking of HFCS and thought it was just as bad as sugar but now realise it's actually good!). I cannot remember the brand name off hand but will look when I get home. It contains soy bean oil, and I didn't quite like the taste of it, but might give it another try. I got it from Bilo.