Thats incorrect. 2005-2008 Tacomas had two Limited Slip Differentials available from dealer, neither was Torsen like.
a. limited Slipp for factory TRD sport and Double Cab Long Bad was Hino 8 Inch Limited Slipp. It was manufactured in Hino factory in Japan and it is most heavy duty limited slip installed by Hino/Toyota. it has 8 clutch packs 4 on right axle and 4 on left axle.
b. TRD limited slipp made by Eaton, installed per request as Add ON. With 3 clutch packs installed centrally.
Hino limited slip is pretty much unbreakable, all it needs fresh oil every 12 000 miles to work and it hates Synthetic oils. That is the only problem with it.
Benefit: Unlike any other limited Slip differential it works with one tire in the air (like a locker). With 4 pinions its stronger then most lockers, its Auto so its always On, and allows speed difference between the wheels. Its made to power slower rotating wheel, instead of usual (slow the faster wheel) kind of what Lockright does.
Unfortunately Toyota decided to never sell this in North America which is stupid.
Proof that what I have been reading is wrong. Got to love the internet. So the Hino is a non US unit. The Eaton is a clutch plate style LSD and came in the first few years of the second generation US trucks.
Apologies for the bad info.
So dare I ask, of the TRUTRAK TORSEN style or the Detroit Locker non Torsen style, is one better than the other and why?