I checked my book. I guess it's been awhile since I did a gas engine, as the torque is the same for the regular bolts as it is for the oil bolt. I'd do them all as stated in the book. I'd also put a light film of oil on the bolts. They have that figured into their torque ratings, so if you don't do it, you're actually under torquing them. Plus it makes taking them back out easier in the future, as it prevents corrosion.