John,
I don't know the capacity of your TX455 gearbox but it would not be 
over one quart.
My HDX589 gearbox takes exactly one quart.
As you probably already know it is important to flush the old gear 
lube out with
the synthetic lube you are going to use.  The original lube and the 
synthetic are
not compatible.  I would order two quarts.  That should work fine for 
flush and fill.
Here's a supplier that I have used.
https://www.zoro.com/mobil-mobil-shc-630-circulating-iso-220-1qt-120272/i/G0943074/ 
Bob
K6UJ
On 9/5/16 10:27 AM, John Holmes wrote:
I was reading with interest the explanations of the lube needed for US
Towers. My TX455 has been up for five years now and, while I have 
lubed the
grease fittings regularly, I've never changed the oil. I want to do 
this now
using SHC630 as K6UJ noted. However, before I order this, how much 
would you
recommend I order? Would 2 quarts be enough to both flush the gear 
assemble
and refill it? I'd hate to have too little on hand after draining.
Thanks for your help.
73,
John W9ILY
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk