Buying DEF in diesel lanes at Pilot/Flying J

Semi trucks cost a lot more than a 1 ton diesel pickup truck and the semi drivers don't seem to have all the trouble guys on here keep talking about. The day I can't put the DEF in the correct tank is the day I quit doing it and have my 8 year old grandson do it for me.

I once asked a cashier at the fuel desk if she ever heard of DEF being contaminated and she said no she hadn't, the drivers pump it into their trucks all day and night with out any problems.