Hey with these new engines, DEF and all, can you use any type of cold weather fuel additives? I had one dealership tell me no as it will mess up the aftertreatment stuff. I'd hate to be at the mercy of just the grade or quality of fuel. Any ideas?
You can use any antigel you like - your Volvo dealer has their collective head somewhere where the sun don't shine. The DEF after-treatment is something that goes on in the exhaust stream - not in the combustion of the fuel.