I am planning on using this gear oil in my diff tomorrow. Just wanted to see if anyone has used it. Lucas 80w-90 GL-5 gear oil. I know that is the requirement of our cars and I don't want to stray from the specified weight. Plus it says its for LSDs. I really wanted to go with a synthetic like Amsoil 80w-90 but it would take a week to get and I need to change my diff fluid like....yesterday.

check it out...

http://www.lucasoil.com/images/media...0_gear_oil.pdf

 

20 views and no one has any comments? C'mon guys I need mental support here before I put this in my car.

 

Moved to proper forum

 

Its 80-90w GL5 , it will work fine

 

And it DOES! Holy crap my diff is way more quiet and smooth feeling. I'll still be trying the synthetic next go around....

 

hey man so it works good or what.. also how many miles u have,,, i just hit 26k i wanna change mine also..

 

i just change my diff. fluid to the lucas like 4 days ago and it work perfect. same one 80w-90 GL-5

 

I'll be using Amsoil once I install my Quaife Diff this month. I like to use synthetic through out the whole car. Last to do on my list is the Tranny.

 

I run motul fluids in the trans and diff.

 

i just bought the same stuff yesterday but 75w90...havent driven it yet because someone misplaced my 10mm hex socket so i cant torque the bolts to specs

 

+1, Spend the few extra bucks on the Motul. I have tried several brands, the only one that seems to hold up the best

 

mobil one synthetic is great i use it in my car

 

omgwtfbbq

 

You have got to be kidding me?

But anyway. I use Motul 300V and it works great. I'm going to be running the Mobil1 75-90 full synthetic at the next oil change and see how it goes. Here in europe they call it liquid gold for your gearbox (it's meant to be that good!), and it's also VERY expensive, so i figured i'd give it a shot!

 

Any good?

Here it's about 40 bucks a litre!

 

I used the Mobil 1 Synthetic in my Cusco RS for a very short time (maybe a week). The two didn't get along at all. I ended up going back to the Castrol dino before going to full synthetic again (I've alternated between Motul Gear 300 75/140 and Motorcraft, both have worked great). The Mobil 1 made the diff pop and make unfriendly noises. Even the Castrol dino stuff worked better. Not sure how it behaves on other diffs though, my only experience was with my Cusco

 

What about in the gearbox?

 

Torque Spec?!? Just snug it down, and check for leaks!

Never had an issue with mine, and i've never torqued it the three or 4 times i've changed out my fluid.

 

Personally, I use Redline in my tranny and diff. Works great for me

 

My bad to bump a 3 yr old thread. Was curious what brand everyone is running. Amsoil, lucas , or motul? And what interval do you all change at?