Has anyone ever used a vacuum pump to do an oil change on their Tahoe? On my old boat, it was the only way to do it. I am just curios as to how effective it is. For those that do not know what it is, it is a pump with a long, thin hose that you feed into the oil dipstick tube all the way to the bottom. Pump creates a vacuum and pulls the oil out. I do not have an issue crawling under and pulling the plug, just wanted some input on it. Thanks!