Even if (or maybe especially if) you're relatively new at servicing pressure washers, you've probably been assigned to do some oil changes on the high pressure pumps. Now that doesn't strike me as the world's most interesting task. Kind of reminds me of a time when I worked as a painter - seems like the newer painters always got the most tedious assignments like painting radiators or the insides of small closets. We want ways to change oil that are both easier for us and have the least chance of leaving puddles of oil on or under the customer's machine. Below I'll cover four methods: draining, suction gun, hand suction pump, and electric suction pump. Don't forget that the warmer the oil, the more easily it will come out, regardless of the method. Try to do the oil change after you're done running/testing the machine.
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