I know a lot of people agonize over having oil pressure immediately upon engine start up. I build about 6 engines (car) each year. I always pre-lube an engine before I fire it up for the 1st time. This last time I had my motor torn down on the XR600, I found quite an easy way to pre-lube the engine and thought I would share. Since I had taken my oil pump apart, and had the engine out, I knew the pump was completely empty as were all of the lines, and internal passages inside the motor. Once I got the engine back in, all the lines hooked up, I filled the oil reservoir to the top. As I recall it was about 1.5 qts. I then put the filler cap back on. Then I removed the vent tube-the one that runs from the crank case up to the side of the oil reservoir/frame. I then took a rubber tipped air nozzle on my air compressor line and pushed the rubber tip into the end of the steel line where the vent hose attached. With the spark plug out, and the oil line to the head loosened so as to confirm when the oil pump & lines were primed, I squeezed the trigger on the air nozzle, and began slowly kicking the engine over. It took all of 5 kicks to begin to see oil trickle out the oil line at the head! It worked so well, that I could not believe it had pre-lubed the entire engine so quickly. This flat out WORKS! If you are concerned about pre-lubing an engine before start up-try it! If you are concerned about pre-lubing after an oil change-you can still do this! Without removing the tank you can still get to the steel tube on the oil reservoir/frame with a pair of needle nose pliers. Pull the tube off, and push it down out of the way. Then with a piece of 3/8" hose about 8" long you can put it onto the steel nipple and then put your air nozzle into the other end. The hose is only to act as an extension as it would be hard to squeeze the air nozzle into that tight space between the head tube & the tank. The steel nipple points down further requiring the use of the extension. Obviously, you want to regulate the air pressure down-don't blast it with 120PSI!! If I remember right, I regulated my PSI down to 30. Don't forget to add the remaining amount of oil needed to bring the level up to FULL after pre-lubing, and if you loosened the oil line nut at the head-TIGHTEN IT BACK UP! I forgot to do this after starting the bike and was rewarded with oil all over my freshly cleaned & painted head and cases. If this helps only 1 person-I have done my good deed for the day.. Ride on!