First, thanks for all the info on this board. 99% of the time I can find my answer, so I've never had to post a question--until now. I have a particular towing situation that I could not find addressed even though I spent a couple of hours looking through the threads. I put it here in hopes of finding some help about the V-6 and towing.
Due to a drought situation, the lake where I have my boat has been drawn down to such a level that the regular ramp is no longer usable, and a temporary concrete surface has been put down to extend the ramp into the water. This temporary concrete material has virtually no texture, in fact it's not much more grippy than your garage floor (it's some sort of erosion control precast junk, don't ask). Since it's submerged, it's EXTREMELY slick and I haven't seen any vehicles get anything but rear tire spin until they get onto the regular ramp surface. However, almost all of the tow vehicles I've seen are large 4 x 4 pickups and such and clearly outclass my own vehicle for towing, plus they are only pulling bass boats. Trailer, boat, and gear for me is 3500-3800 pounds, no extra weight in truck.
Now, here's the issue. The rear wheels on the 4Run will get zero traction on the temp submerged ramp. My front wheels will have almost perfect traction on the heavily corrugated original concrete portion of the old ramp (wet ramp beyond the water's edge is NOT the problem). Will the V6 still have enough power transfer to the front axle to get me that ten (10) or so feet I need to get the rear tires on solid traction? Don't forget there is a trailer, so there will be a little front end lift due to the hitch weight. It's basically ALL front axle power at first, and again, the old part of the ramp has near perfect traction so it's just the submerged part that's a problem. If I lock the cent diff, I would actually get that rear wheel spin, which I don't want, plus the Torsen LSD actually gives 53% power to front axle and balances me out for the good part of the ramp power wise. Also, I would prefer to keep it in 4HI because it's about a 3/4 mile winding road before there is a place to pull over on flat ground where I can shift it out of 4Lo (don't like to stop on a hill, with load, shift to neutral, switch to 4HI on a one lane road just in case something screwy happens).
Maybe I'm just being overly cautious, but I don't want to get in a bad situation at a remote boat ramp ---I'd like to have a plan and some confidence before I get out there. I've never run into this problem where I'm towing and literally get no rear axle traction, but I would appreciate any assistance or thoughts as to best ways of managing this. And "you should have bought the V-8 " is not an answer. Thanks.