ECGS diff oil

How many of u guys use the Lucas 85 140 gear oil with the ECGS bushing? I’d like to just stick with a synthetic oil all around to get the max life out of it. Thoughts?

 

Stick with what ECGS recommends. Changing the front diff fluid is so quick and easy that running synthetic really is no benefit.
I've put 15k on my bushing with the 85/140. Still smooth as glass.

 

I've got 65K on my ECGS bushing, been using Lucas 85/140 since I put it in with no issues, I change it every 30K when I do diffs/xfer case.

 

Over 100k on the bushing with

$30 75w-90 Synthetic Gear Lube - 1 Quart (Pack of 2)

75w-90 synthetic of various brands (mobil 1, valvoline, supertech).... zero issues. Fresh fluid is key moreso than anything.

 

Anyone make a synthetic 85 140?

 

Why are you so hung up on running synthetic?

 

If I run synthetic in the transfer case I can get 60K miles before it needs to be changed. I’d just like to keep all the OCIs the same.

 

With how clean my

$30 75w-90 Synthetic Gear Lube - 1 Quart (Pack of 2)

75w-90 syn came out of my front diff n transfer case at a 60k OCI... its getting extended to 80k this go around.

 

seems like an odd reason to NOT use what ECGS recommends based on that. They told me avoid synthetic and stick with the lucas 85/140.

 

Fair enough. I’m not dead set on NOT using reg 185 40. Just getting opinions. Thanks guys.

 

Good to know. I have amsoil in my tranny right now since 2017. I want to try the redline MT 90 in my gearbox. Figured it’s about time for a change anyway...

 

MT90 is a good option

Use what ECGS recommendeds.

 

Any harm in using 85/140 in the rear?