Received a Hummer
I just bought and 07 Classic Duramax 6.6 with the Allison tranny. And there are ALOT of things the internet and GM can't answer for me. First off..what is the difference between the LBZ and the LLY? And how do you tell which one you have? Second...should I be using fuel additives? Do they really help that much. Third...I don't really have a led foot. Is it bad to (baby) a diesel engine? Or should I be giving it [email protected]%%? And Finally....do the 07's have the 06 engine in them? And are they compatible with low sulfur fuel? Any help on ANY of these questions would be great...I've talked to 7 different garages from PA to SC and NONE of them knew what to tell me.