So far the temps are only in the 50s and my truck isn't wanting to start. It usually turns over for roughly 5sec (complete guess on time) before it starts. Afew times I have to stop and try for a 2nd time. It has brand new glow plugs, glow plug relay, and pigtails. I would think it would crank like a charm but it's not so I'll probably invest in a block heater as well as either rev-x or synthetic oil. Does this sound normal or out of the ordinary?