I have found that a C182 (old one with 12v system) starts easily in just above zero deg weather if you pull the prop through a couple of times before starting.
Pulling it through doesn't accomplish anyting that improves starting...no limbering oil up, no forcing oil through system, no making the engine easier to turn...the only thing you might be accomplishing is turning the propeller until the engine is on the impulse coupling before cranking.
In my particular case, no primer at all needed, just a few quick squirts with the throttle while engaging the starter.
The throttle is nothing more than an air valve. Some throttle systems use accelerator pumps. These are not for priming. The accelerator pump is designed to aid in engine acceleration during rapid throttle movements. The primer is for...priming.
If you just have to fly, with the aforementioned care around propellers considered, prime it and pull in through 5 to 10 times, and then prime and repeat, prime and repeat, until you've pulled it through 30 to 50 times. If you still want to go flying after that, it should start fairly easily. The oil will have started to warm a little and flow, and the priming will have introduced a little bit of oil dilution into the cylinders to reduce the friction and stiffness.
You're not diluting anything by doing that. What you are doing is removing any oil on the cylinder walls and drastically increasing wear, as well as increasing your liklihood of having a fire.
Preheat, preheat, preheat. Pulling that prop through isn't limbering anything up.
Oil dilution is an older system included as a factory option going back to the second world war, in which fuel was introduced directly into the oil on shutdown. The benifits were found to be nil, and it's been history for a long time now. You're not going to dilute the oil using the prime...in fact, you're not diluting anything. What you are doing is moving parts without adequate lubrication, when it's needed most Most wear occurs on engine start, and you're increasing the wear by a considerable margin.