Yes warm it up. Its the fact that the oil isnt warm enough to be thin enough to make it to all the parts.
You should alway warm up your car. In the winter, bare minimum until the needle starts moving. In the summer... 30 secs or so is fine.
When you get right in and go repeatedly, and warp a head, becasue things dont warm at the same rate, and you put too much power to it...
well serves you right.
I usually let it warm up for 5-10 mins in the winter.
Absolutly necesary to do it that long? No, but its nice and toasty in there by the time I have to get in my car
