Recent Topics
2GR-FE Water Pump Noise
by The Critic
05/03/16 03:36 AM
Castrol & Shell oil sale in Oz
by SR5
05/03/16 02:45 AM
UOA Mobil Delvac MX 15w40?
by nyumski
05/03/16 02:13 AM
2015 Silverado - Put some chrome
by Realtech214
05/02/16 10:22 PM
Ticks!
by spasm3
05/02/16 09:54 PM
shop didn't replace clamps on steering rack
by motor_oil_madman
05/02/16 09:46 PM
First SSD on Xubuntu 16.04
by Eric Smith
05/02/16 09:20 PM
Purolator Boss PBL25277
by Quattro Pete
05/02/16 09:11 PM
Pan w/ drain plug for 62TE
by JTK
05/02/16 09:04 PM
2007 Explorer 4.0 upper and lower intake gaskets.
by ls1mike
05/02/16 08:55 PM
Cars... where they belong: On the road!!!
by Spillips
05/02/16 08:29 PM
I got 'spoofed' !
by Geauxtiger
05/02/16 07:57 PM
Newest Members
myfarmertan, coachvonyo, ionix, Amtecol, DRAX392
57779 Registered Users
Who's Online
21 registered (Duke, Char Baby, DemoFly, asand1, cobra7279, Dykkerdahl, 1 invisible), 517 Guests and 335 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
57779 Members
66 Forums
248391 Topics
4061753 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG
Topic Options
#3073705 - 07/23/13 06:58 AM Clear Synthetic 75w/90 Gear Oil???
saltedleech Offline


Registered: 07/22/13
Posts: 6
Loc: mi
I am hoping someone can help answer my question. Yesterday I was changing the rear diff. fluid on my '03 Tahoe.

Having never used "Synthetic" Gear Lube before I didn't think anything of it when I began pooring in the new fluid. I purchased it at Advanced Auto and was using their brand.

Since I was teaching my son and explianing how you can smell "burnt" fluid and see the viscocity between your fingers. I was surprised that the new oil was clear but it had/has the proper smell and viscosity.

After pooring in 2 quarts and begging to poor in the third my son hsaid, "Dad its Yellow". I immediately stopped. The color of the third quart is what I would have expected, having used synthetic engine oil since the '80's.

Does anyone know if the clear oil is OK??? I went back to the store and they gave me (2) new quarts and both of them are the common "yellow" color??

Thank you for your help

Top
#3073732 - 07/23/13 07:31 AM Re: Clear Synthetic 75w/90 Gear Oil??? [Re: saltedleech]
danthaman1980 Offline


Registered: 03/12/10
Posts: 890
Loc: SE Wisconsin
I've never seen 'clear' gear oil...

If it were mine - having just poured in 2 quarts of clear gear oil, and all the new quarts being the more normal yellow color, I would question the quality of the store brand gear oil. I would dump the clear oil, buy 3 quarts of a different brand, and start over. Stick with a major brand like Pennzoil, Valvoline, Mobil, Castrol, etc.
_________________________
2003 Chevy Silverado 1500 5.3 LS Quadrasteer ~223,000 miles; PU 5W-30

2014 Mazda6 Sport 2.5 Skyactiv ~31,000 miles; PP 0W-20

Top
#3073735 - 07/23/13 07:36 AM Re: Clear Synthetic 75w/90 Gear Oil??? [Re: saltedleech]
Zaedock Offline


Registered: 09/10/05
Posts: 3860
Loc: Massachusetts
It was probably a different batch. Oil color, even the same brand, can vary.

I believe (and someone correct me if I'm wrong) that Advance gear oils are made by Warren Unilube, who makes decent auto fluids.



_________________________
2012 F150 Ex-cab 5.0L/2004 Malibu Maxx LT
1992 YJ "The Heep"/1994 Olds Cutlass Ciera 3.1/auto
1975 Ford Bronco/1959 Willys CJ5/20XX Custom rock crawler

Top
#3073746 - 07/23/13 07:52 AM Re: Clear Synthetic 75w/90 Gear Oil??? [Re: saltedleech]
JethroBodine Offline


Registered: 07/19/13
Posts: 449
Loc: Ohio
The GM grape scented 75w90 specified for your truck is almost clear.

Top
#3073751 - 07/23/13 07:54 AM Re: Clear Synthetic 75w/90 Gear Oil??? [Re: saltedleech]
Roadkingnc Offline


Registered: 07/16/11
Posts: 714
Loc: NC USA
vI have seen clear gear oil, don't worry about it

Top
#3073764 - 07/23/13 08:07 AM Re: Clear Synthetic 75w/90 Gear Oil??? [Re: saltedleech]
saltedleech Offline


Registered: 07/22/13
Posts: 6
Loc: mi
I still need to "top Off" the fluid

So you dont think Mixing the two should matter?

Top
#3073768 - 07/23/13 08:11 AM Re: Clear Synthetic 75w/90 Gear Oil??? [Re: saltedleech]
JethroBodine Offline


Registered: 07/19/13
Posts: 449
Loc: Ohio
Originally Posted By: saltedleech
I still need to "top Off" the fluid

So you dont think Mixing the two should matter?


No not at all. The color in most oil is dye.

Top
#3073771 - 07/23/13 08:14 AM Re: Clear Synthetic 75w/90 Gear Oil??? [Re: saltedleech]
saltedleech Offline


Registered: 07/22/13
Posts: 6
Loc: mi
Thank you, Oil is cheaper than a new rear end.

I will top it off and run with it.

Top
#3073778 - 07/23/13 08:23 AM Re: Clear Synthetic 75w/90 Gear Oil??? [Re: saltedleech]
Zaedock Offline


Registered: 09/10/05
Posts: 3860
Loc: Massachusetts
thumbsup
_________________________
2012 F150 Ex-cab 5.0L/2004 Malibu Maxx LT
1992 YJ "The Heep"/1994 Olds Cutlass Ciera 3.1/auto
1975 Ford Bronco/1959 Willys CJ5/20XX Custom rock crawler

Top
#3073852 - 07/23/13 10:05 AM Re: Clear Synthetic 75w/90 Gear Oil??? [Re: saltedleech]
dnewton3 Offline



Registered: 05/14/07
Posts: 6367
Loc: Indianapolis, IN
Many oils have a dye added to color them to some tolerable and desireable market perception.

I would think it's OK to use; it's likely the color was simply a bit "off".
_________________________
Conventionals vs. Synthetics isn't about which is "better"; it's about which lasts longer, while assuring safe operation, in relation to cost. Any product can be over or under utilized. The same applies to filters.
Make an informed decision; first consider your operating conditions, next determine your maintenance plan, and then pick your lube and filter. Don't do it the other way around ...

Top
#3074003 - 07/23/13 01:41 PM Re: Clear Synthetic 75w/90 Gear Oil??? [Re: saltedleech]
MolaKule Offline


Registered: 06/05/02
Posts: 16948
Loc: Iowegia - USA
Quote:
After pooring in 2 quarts and begging to poor in the third my son hsaid, "Dad its Yellow". I immediately stopped. The color of the third quart is what I would have expected, having used synthetic engine oil since the '80's.


Was your son viewing it from a different direction or at a different angle under a different lighting situation than you?

Even with the clearest transparent base oils, the additives will give it a slightly yellowish, to honey-colored, to brownish color, and I mean a very light tinting.



Edited by MolaKule (07/23/13 01:47 PM)
_________________________
Some days I amaze myself. The other days I leave the keys in the Refrigerator. smile

Top
#3074010 - 07/23/13 01:47 PM Re: Clear Synthetic 75w/90 Gear Oil??? [Re: saltedleech]
saltedleech Offline


Registered: 07/22/13
Posts: 6
Loc: mi
It was/is clear like hydraulic or brake fluid. The "yellow" was what I would consider the normal color of differential fluid or heavy gear lube.

Top
#3074022 - 07/23/13 01:57 PM Re: Clear Synthetic 75w/90 Gear Oil??? [Re: saltedleech]
MolaKule Offline


Registered: 06/05/02
Posts: 16948
Loc: Iowegia - USA
WPP and other large blenders use computer automated blending so this is highly unusual.

If there are any questions about it, save the fluids and have VOA's done.
_________________________
Some days I amaze myself. The other days I leave the keys in the Refrigerator. smile

Top
#3074054 - 07/23/13 02:35 PM Re: Clear Synthetic 75w/90 Gear Oil??? [Re: saltedleech]
MetalSlug Offline


Registered: 07/24/10
Posts: 2393
Loc: vicksburg ms
I alway shake the bottle up really good wink . I seem valvoline clear oil before
_________________________
Being home with my wife and kids is bless -MetalSlug-

Top