[Fot] TR Diffs

[Tony Drews]

I use Redline gear lube (75w90, I think) in my non-triumph rear axle 
with a detroit locker.  It hasn't caused problems.  My understanding 
is that the lockers aren't very particular about the type of oil, 
unlike our transmissions.

- Tony Drews

At 10:23 AM 3/29/2009, BOB KRAMER wrote:
>Does anyone know what synthetic lubricants work well in a TR Detroit 
>Locker? I've been using GL4 rather than take any chances.
>
>Bob Kramer, Austin Texas
>rkramer3 at austin.rr.com
>----- Original Message ----- From: "Randall" <tr3driver at ca.rr.com>
>Cc: <fot at autox.team.net>
>Sent: Saturday, March 28, 2009 3:49 PM
>Subject: Re: [Fot] TR Diffs
>
>
>>>All differentials take a lot of power. More even than the
>>>transmission. Spiral gears (long tooth contact) 90 degree
>>>direction conversion, planetary or LSD. It all sucks power.
>>>Absent a significant design difference they'll be roughly the same.
>>
>>I agree.  Two things possibly worth noting :
>>
>>1) the power wasted is roughly proportional to the power transmitted, so TRs
>>will presumably lose a lot less absolute power than Hot Rod measured.  IOW
>>if they measured 25 hp lost behind a 500 hp V8; a TR with 100 hp might only
>>lose 5 hp in the diff.
>>
>>2) A higher performance lubricant may help save some of that power.  Hot Rod
>>also found something like 7% more power at the wheels by converting engine,
>>trans, diff to full synthetic.
>>
>>I don't have weights either, but the TR3-4 unit seems darn heavy to me. The
>>smaller Ford might not be that much worse.
>>
>>Randall