If you are going to buy a pump,get a vane puppy.They are made to pump oil and dont have a impeller to go bad.The impellers for those oil puppys are aroung 50 bucks.Ten years on a vane pump with 8 or 9 oil changes a year.They work best if you prime them the first time with a little oil.I have mine mounted beside the engine and plumbed to the base with a hydraulic hose,and hard wired to a breaker.I use a vacume pump for the gear,as that doesnt get changed as much.It takes me 5 minutes to change the oil on my deere,and most of the time is pouring in the new oil.Some people pump it back in if the valve cover is hard to access.You could make this portable like Larry has,in my case I like it ready to use.