Disagree, adding that type of extra weight all year round is going to shorten the life of that tranny very fast. How must stress is put on the tranny in winter as opposed to summer is very different. Different surface, winter normally hard and flat, summer soft and spongy. Different temps, runs hotter in summer with extra weight. If it's a hydro, big problem. Heavier weight in summer could easily put ruts in the lawn, particularly in the early part of the season. This is only my opinion, and many will say it ain't worth a darn, as I'm only a grease monkey and not a professional mechanic. Use what I post at your own risk.