i was wondering what was the best way to change to oil on my boosted apex i have the boondocker kit do u have to pull the oil tank off to get to the filter or can u get to it by leaveing it on and come from under neath the sled and were do u dump all the oil in threw the valve cover or can u dump it all in the oil tank that came with the kit thanks for the help and what oil is every one running in these for the real cold weather