We own a 37ft. Forrester Georgetown XL. Our powerplant is a very healthy V10. V10's have gotten a bad rap because of the sparkplugs blowing out of the head. If the plugs are torqued to the correct specs. then there should not be a problem. So far, knock on wood, no problems on the road towing our Honda CRV. I have not weighed our rig when it is loaded but I believe we are within the load limits. I am not familiar with the "new" V8 that apparently is being installed in the newer Forrester motorhomes. I did find out on this website that the V-10 gets its best performance when pulling a hill at 4500 RPM.