Alright guys, I've done an exhaustive search on here before posting. Either I'm blind or maybe just not using the right key words.
I am looking at buying a boat (Yamaha AR240, looking to be a tad over 5,000# loaded and such). I got the stock factory towing package and am in the process of installing ATF & Engine Oil Temp gauges.
#1) I've heard of rear differentials taking a beating when towing and was wondering if the Tacomas are able to swap out the rear case to one with external fins to aid in cooling the oil? Or if that wouldn't even be necessary.
#2) I've seen the breather mod for the rear diff and just wanted to hear from anyone who launches boats if the rear diff gets dunked. (Requiring this mod to be done)
Some trips will be under 2 hours towing with some being longer into AZ at maybe 6 hours towing.