Transfer Case oil recommendation

[Vegasmarc21]

Transfer Case oil recommendation by a Chevrolet service advisor was to put Royal Purple, Redline, Or Lucas transfer case fluid where my Tahoe says of course Dexron Vi...it was my asking if there is anything I could use other than dexron vi and he came back after asking a technician who owns a 2012 silverado stating he uses royal purple because the tech said the dexron vi in transfer cases doesnt do as good as the brand's mentioned above....anyone use anything other than dexron vi in their tcase?

 

[swathdiver]

Not me. Are those other fluids Dex VI equivalents? I don't think my transmission would be too happy if the seal between the two leaked and now had gear oil in it.

 

[Vegasmarc21]

Not me. Are those other fluids Dex VI equivalents? I don't think my transmission would be too happy if the seal between the two leaked and now had gear oil in it.

What brand of oil do you use? I put in mobile 1 atf dexron vi semi synthetic about a month ago.

 

[Eod1]

I have always used Lucus in my transfer cases. I use the additives in everything else.

 

[Wolfbraid]

I'm curious which Lucas oil to use? Our mechanic at work swears by it, he maintains our AWD Savana vans, but can only put in the company spec oil. Watched him put in a TC and a front Diff... at least I know it's not the end of the world if I have to do that.

 

[swathdiver]

What brand of oil do you use? I put in mobile 1 atf dexron vi semi synthetic about a month ago.

I think you got me again Marc! Mobil One ATF Dexron VI is fine. I changed mine with this: https://www.amazon.com/ACDelco-10-9395-Dexron-Automatic-Transmission/dp/B01EKMGG92

 

[Vegasmarc21]

I think you got me again Marc! Mobil One ATF Dexron VI is fine. I changed mine with this: https://www.amazon.com/ACDelco-10-9395-Dexron-Automatic-Transmission/dp/B01EKMGG92

Swathdiver, thanks for the info. You've seen my video of my driveline noise....now I'm thinking it feels like it could be my rear differential clutches???? My rpo code is gu4....do I have clutches in my rear diff?

 

[HiHoeSilver]

Swathdiver, thanks for the info. You've seen my video of my driveline noise....now I'm thinking it feels like it could be my rear differential clutches???? My rpo code is gu4....do I have clutches in my rear diff?

Gu4 is just your gear ratio. 3.08. Do you have code G80?

 

[swathdiver]

Swathdiver, thanks for the info. You've seen my video of my driveline noise....now I'm thinking it feels like it could be my rear differential clutches???? My rpo code is gu4....do I have clutches in my rear diff?

The clutches chatter when turning, if you have RPO G80, then you have clutches. They are not as prominent with the addition of the locker but still play a role.

 

[Vegasmarc21]

Gu4 is just your gear ratio. 3.08. Do you have code G80?

Sorry for late response. No G80 code ...what are the codes for an open differential and code for LS Differential...or its G80 or No locker at all (kinda all or nothing)

 

[HiHoeSilver]

Sorry for late response. No G80 code ...what are the codes for an open differential and code for LS Differential...or its G80 or No locker at all (kinda all or nothing)

As far as I know, it's G80 or open.

 

[swat2380]

Find a new service advisor/mechanic. Actual Dex VI licensed fluids are specd so tight by GM that there is little to no difference from brand to brand with the exception of companies using a slightly different base oil but still has ti be within GM spec. There is only one, possibly two additive providers for Dex VI licensed oils (Lubrizol) and a brand of oil cannot dictate what goes into the add pack.

So to summarize Dex VI is Dex VI some boutique oil companies make a great fluid that "meets dex vi" requirements but is not a licensed actual Dex VI product

 

[Meccanoble]

Over a year later, how are people doing with their transfer case? Same beliefs on suggested fluids?

 

[donjetman]

Over a year later, how are people doing with their transfer case? Same beliefs on suggested fluids?

For the past yr and 16,000+ miles we have been running Amsoil ATF in our AWD transfer case. So far so good ?

 

[Meccanoble]

For the past yr and 16,000+ miles we have been running Amsoil ATF in our AWD transfer case. So far so good ?

ATF Synthetic?

 

[Meccanoble]

and for non G80 transfer case, we are going with ATF, not gear oil?

 

[donjetman]

ATF Synthetic?

3 pts Amsoil ATL atf in our BW 4485 awd transfer case.

We only use Dexron VI in the 6L80 trans

 

[Meccanoble]

How do you guys feel about Lubeguard fluids?

https://www.lubegard.com/products/atf/

 

[Foggy]

LubeGard additives are the bomb!!! I use the red bottle in
all my GM transmissions. The other color bottles are IF you need
to turn your base fluid into a highly modified type (like some Mopar, Toyota, Ford stuff) That way you don't have to "stock" so types of fluids.

My transmission guy turned me on to LubeGard over 25 years ago..
I use it at every service

To ADD: I only use the additive bottles.. NOT the fluid.
I have never used the fluid itself.
Any brand of Dex VI is fine...

 

[Meccanoble]

I have G80 and my book is ripped, missing half the book