i am a newbie to this forum, hope this is in the right place... i was wondering if anyone has used this product, B12 Chemtool from berryman's.. it contains toluene, supposidly you can use it in your oil to clean before you change it and you can use it in your gas to clean injectors and what not.. i was wondering if anyone had good or bad experiences... i have a 96 pathfinder se 4x4 with a 3.3L.