Profile For David T.

Thanks everyone of you for your answer, very helpful, if it was wrong written or read, maybe because my first language is Spanish and sometimes my expression sound rough, is like you don't have a clue is I have a clue, lol Thanks again note I'm 100% sure that I was 100% correct

David, Welcome to the forum. I am a NY native who now lives in NC. We advise all people to start with these links.

• Truck Driver's Career Guide
• Brett's Book: The Raw Truth About Trucking (free online version)
• High Road CDL Training Program
• CDL Practice Tests

Then look for a Paid CDL Training Programs. I went through CFI's paid training and am now a trainer with them. Everyone here is happy to help you be successful in this career. Good luck to you.

Thanks for the respond, I been reading articles about DEF and I never found anything related to brakes, but I want it to all the expert on the field. I attend to Ferrari driving school in Astoria Queens, New York. Because it's a grant I need to complete class B to get class A, but it's ok, or maybe I find a company who help me get the class A and don't need to deal with some circumstances here.

Thanks for the picture and the article, but if you read my post I already know all that.

Hi, I'm a CDL student and I know some mechanical about trucks. I have a fellow student who said that the DEF prevent the air tanks form freezing, another said it's an additive. I Google for hours and I know both are incorrect but I didn't found anything that said in Black and White DEF is no related to brakes. I found and article that said it's not an additive. Can someone help me with knowledge. Thanks