Humm ... looking back at your Blog where you originally asked this same question (and got one reply) a couple of hours before you posted it here:
Originally Posted by avrahani
What are you putting *in* the sandwich?
Originally Posted by DragonSlayor
It is a general question to cover most wetter sandwiches. Greasy burger, BBQ beef, Italian beef, ETC
Knowing what the target is makes it a little easier to hit the mark.
I never put mayo on a burger, and with the exception of maybe a couple of places you will not get one around these parts unless you order it that way - you'll either get mustard or mustard and ketchup. BBQ is NEVER with mayo, just BBQ sauce. Italian beef (sliced, meatballs, sausages, etc.) - Italian tomato sauce (thought I had better be specific so our UK and Aussie members don't think I'm talking about ketchup
Toasting your buns or bread will go a long way in slowing down how quickly a wet sandwich turns soggy - and you don't need to smear it with oil to be effective.