ECGS bushing questions

I had replied to a topic regarding the ECGS bushing in the 2nd Generation Tacoma message forums, but wanted to repost here in 3rd Generation since that is what I currently am driving.

I'm curious about two things with this ECGS bushing. I received it along with the axle oil seal and all install tools yesterday. Today is Saturday and they are closed; I had wanted to ask them:

1. Attached is the bushing I received. It looks to me that the steel lip that protects the bushing is the same internal diameter as the bushing itself. One of their video's on their website remarks that they made this protective steel lip to:

a. aid in protecting the bushing during installation
b. Serve as a warning if the bushing is failing, because you will get metal on metal contact.

From the git go, it almost looks like I will get metal on metal contact with the CV bearing surface and this ECGS bushing. Is the difference between the diameter of the bushing and the steel protective surface actually that small? I tried to take a detailed picture of it but it's hard to photograph:



I also assume that the crease in the bearing surface is normal?

2. Anyone else have comments about using ECGS's recommendation of 85w140 non-synthetic Lucas diff oil? We're supposed to be running 75w85 GL5 diff oil.

 

I don’t have a direct answer to this , but maybe a suggestion. Do you have another cv laying around that you could just slide into the bushing? You can’t really go by just looks on something like this and guess at it. If you don’t get the answer you’re looking for here and don’t have another cv laying around you could just always run down to advance or something and ask to see one of their cvs​

 

Yes to everything. I ran 75w90 at first. Didn’t have any vibes. Switched to 80w90 since it’s non-synthetic and supposedly helps the bushing last longer. ARB sells a very similar bushing in their front locking diffs and recommends specifically the non-synthetics. Also in general heavier weight oils are supposed to make less noise and rattle in your gears. Lighter weights improves efficiency at the cost of noise. It’s like 1% either way, no big deal.

edit: the only reason I didn’t try the 140w is because it gets to -40C here and that’s a little to thick for my tastes.