ticktockclock

I'm currently a 4th year PhD candidate in the life science field. Prior to grad school, I went to a smaller school that only had undergrads, making my experience with real research/labs/graduates pretty much limited to what I've learned these past few years. Anyhow, it's been becoming very apparent to me that my advisor is simply not a good mentor. He loves benchwork and is wonderful at grant-writing, but it's becoming clear that he sees everything else as a requirement (teaching classes, advising, training, etc.). He's fairly young and the lab has always been relatively small, so he's not too old or too busy to mentor. He is very non-confrontational and will never express concern or criticisms, instead favoring a "silent treatment" approach that can last for weeks on end, making for some uncomfortable workdays. Any real criticisms I've received have been through the post-doc grapevine. He never really seems to stick up for his students and actually seems to be inclined to throw us under the bus before sticking his neck out to help. He doesn't have a bad relationship with anyone in lab, but he doesn't really have much of a relationship with any of us at all. He's a brilliant and nice guy, but I feel like he simply hopes this will rub off on others instead of attempting to push us toward scientific excellence. I really don't receive much positive or negative reinforcement. Anything I've learned has been from other students or just being left to my own devices. I don't know if I have a specific question, I was just hoping someone could relate or perhaps give some advice. I've put forth much effort on my part in going to him with questions and trying to get him more active in a mentoring role, but he really just seems like he'd rather budget his time elsewhere. I'm within 2 years from having my PhD so switching simply is not an option. Additionally, I'm concerned that I won't receive much assistance in finding a job after I'm done. Sorry for the lengthy rant, but any advice is much appreciated. Thank you!