As many of you know, I like being cost efficient, therefore wanna maximize the life of my pressure washer. I was at my local Walmart and saw this - Sam's Club - KÃ¤rcher Pump Guard - 16 oz. Karcher pump guard. How many of you guys are using it? I wanna make sure my pressure washer lasts me for a while, if it break, wife won't be very happy about it. How you do guys use this stuff anyway???