Well lots of people mount oil coolers and think its going to really effect summer engine temperatures.........to some extent it does but very little since the hottest and most damaging place is the cylinders.........I did a 6 year study and found some interesting things........First the right side cylinder runs 25 or so degrees hotter than the left........this issue must be dealt with to reduce overall cylinder temperatures sucessfully........secondly I think the best spot for the cooler is in front of the engine mount down somewhat low as to not block any air flow.........thirdly air direction vanes will reduce cylinder temperatures another 15 degrees or more if mounted properly and are nearly as valuable as lowering the right cylinder temperature........finally I started 10 years ago with 270+ cylinder temperatures and now I get 230 degrees or less on a hot summer day on the highway..........a combination of things is what successfully lowers cylinder temperatures.......no single thing does it completely........below is an old pic of the success I had without the air deflectors......now seeing 230 cylinder temps instead of 245 @ 85 degrees ambient.......and what a difference that makes....nearly like a water cooled bike now.............oh well.......xsjohn