[Tech II]

Not an oil problem(may help it crank over easier),.....It would have to be an extremely cold day, below zero, to affect cranking....

Try replacing the fuel filter?

Try some dry gas?

Pull the IAC and clean the pintle to it and the passageway? Clean throttle plate and bore?

Check for codes?

Would need a scan tool to see if the coolant temp sensor matches the IAT sensor, before starting first thing in the morning...