I have a perkins 1004 in my JCB skid steer that is a 92 hp turbo motor that is hard starting. It has a fresh interstate group 31 , good battery cables and clean connections. I have check the cables for hot spots after cranking it for 10 seconds , tried putting the charger on it 15 mins before trying to start it . Nothing seams to make any differance it just turns over slow below 15*f. It will fire up no problem at 20*f but its like a light switch once it gets colder , slow crank and smoke out exhaust. The motor is in good shape , it has 1850 hrs on it and almost zero blow by , no smoke out of the pipe running idle or full speed under load. Also i dont see any glow plugs on the motor is this a option? Rotela 15-40 motor oil and 10-30 hydrolic oil 2003 JCB 1110T skid steer Perkins 1004 AK motor , 92 hp