Recent Topics
Auto Extra 618-51348 cut open...
by DSparks
1 minute 19 seconds ago
Napa Platinum Oil Filters
by pjc360
3 minutes 16 seconds ago
Took a beginners motorcycle riding class
by simple_gifts
23 minutes 4 seconds ago
Toyo Roki Honda OEM 15400-zj1 cut open
by DSparks
43 minutes 14 seconds ago
Brand new ancient QS 10-20w30 in my '70 Datsun 510
by jayg
Today at 01:36 PM
Ryobi 1/6 sheet sander
by expat
Today at 12:42 PM
Orphan Black
by Papa Bear
Today at 12:40 PM
Propane tank gas level indicators?
by 123Saab
Today at 12:12 PM
9012 vs H7
by G-MAN
Today at 12:11 PM
Opinions on Ross Signature Series 294s- Good?
by The_Eric
Today at 11:46 AM
84 mpg. Really.
by Kuato
Today at 11:18 AM
Impala 2008 recall
by Durango
Today at 10:50 AM
Newest Members
hammere30, SpartanSoul, jriordanzoom, Jamus, Tim44
49640 Registered Users
Who's Online
84 registered (Bandito440, AandPDan, Anies, anonobomber, 04SE, 9 invisible), 1733 Guests and 179 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
49640 Members
64 Forums
212155 Topics
3325399 Posts

Max Online: 2605 @ 04/19/14 12:41 PM
Donate to BITOG

Topic Options
#1851326 - 04/09/10 06:39 PM Ok to use 75W-90 Syn in Diff that req SAE 80?
RageOfFury Offline


Registered: 11/15/09
Posts: 288
Loc: Ottawa, Canada
I have a Yamaha ATV (1999 Kodiak 400). I'm going to change out the front and rear differential fluids this weekend. This is what the owner's manual states:

Quote:
Rear Diff : SAE 80 API "GL-4" Hypoid gear oil
Front Diff : SAE 80 or SAE 80W-90 API "GL-5" Hypoid gear oil.


So I went to walmart and canadian tire. Now canadian tire had 75W-90 full synthetic GL-5 hypoid gear oil. Can I use that in both the front and rear? What would be best? What do you guys recommend?

Thanks Canada
_________________________
2011 Jeep Grand Cherokee 4x4
Pentastar 3.6L V6
Pennzoil Platinum 5W-30 & Mopar MO-744 filter

Top
#1851347 - 04/09/10 06:59 PM Re: Ok to use 75W-90 Syn in Diff that req SAE 80? [Re: RageOfFury]
Johnny Offline


Registered: 05/27/02
Posts: 14013
Loc: Retired | Wausau, WI
You probably could, but I think I would use a regular 80W-90 in there. Sometimes Walmart carries Shell Spirax 80W-90 in quarts and that would make a good gear oil for your application.

Top
#1851384 - 04/09/10 07:29 PM Re: Ok to use 75W-90 Syn in Diff that req SAE 80? [Re: Johnny]
RageOfFury Offline


Registered: 11/15/09
Posts: 288
Loc: Ottawa, Canada
Well they also have regular 80W-90 that meets both GL-4 and GL-5.

Why not the 75W-90 synthetic though? shrug
_________________________
2011 Jeep Grand Cherokee 4x4
Pentastar 3.6L V6
Pennzoil Platinum 5W-30 & Mopar MO-744 filter

Top
#1851528 - 04/09/10 09:13 PM Re: Ok to use 75W-90 Syn in Diff that req SAE 80? [Re: RageOfFury]
Ben99GT Offline


Registered: 02/25/05
Posts: 4283
Loc: MS
You can use 75W-90 with no problem.
_________________________
2001 F150 Supercrew
1991 Mustang LX notch
1999 Mustang GT


Top
#1851684 - 04/10/10 12:37 AM Re: Ok to use 75W-90 Syn in Diff that req SAE 80? [Re: Ben99GT]
unDummy Offline


Registered: 02/01/03
Posts: 8756
Loc: RI
It's ok to use. But, if you'll lose an ounce of hp with the thicker gear oil.

The rear-end must be bigger/stronger and/or has a larger sump then the front-end since it only requires a SAE80/GL4 gear oil. SAE80 is 7cst(like ATF)-11cst(MTF/MTL). I would use Redline MTL, Amsoil MTF, or other equivalent GL4 fluid in the rearend. If you don't mind the ounce of power lose, use the 75w90 GL5.

The front-end requires a GL5. Is it overly stressed? There are not too many SAE80 GL5 gear oil, and 75w85 GL5's are pretty tough to find(Redline/Toyota/...). I would definitely use ANY full synthetic 75w90 GL5 in the front end.
_________________________
Those who say it cannot be done, should not interrupt the person doing it.
Your automaker lied!
Is this a spelling/grammar forum or BITOG?

Top
#1851834 - 04/10/10 07:13 AM Re: Ok to use 75W-90 Syn in Diff that req SAE 80? [Re: unDummy]
RageOfFury Offline


Registered: 11/15/09
Posts: 288
Loc: Ottawa, Canada
Originally Posted By: unDummy
It's ok to use. But, if you'll lose an ounce of hp with the thicker gear oil.

The rear-end must be bigger/stronger and/or has a larger sump then the front-end since it only requires a SAE80/GL4 gear oil. SAE80 is 7cst(like ATF)-11cst(MTF/MTL). I would use Redline MTL, Amsoil MTF, or other equivalent GL4 fluid in the rearend. If you don't mind the ounce of power lose, use the 75w90 GL5.

The front-end requires a GL5. Is it overly stressed? There are not too many SAE80 GL5 gear oil, and 75w85 GL5's are pretty tough to find(Redline/Toyota/...). I would definitely use ANY full synthetic 75w90 GL5 in the front end.

So 80W-90 dino in the rear, 75W-90 syn in the front? Is 75W-90 syn good for LSD? The front diff is a limited slip differential.
_________________________
2011 Jeep Grand Cherokee 4x4
Pentastar 3.6L V6
Pennzoil Platinum 5W-30 & Mopar MO-744 filter

Top
#1851853 - 04/10/10 07:56 AM Re: Ok to use 75W-90 Syn in Diff that req SAE 80? [Re: RageOfFury]
unDummy Offline


Registered: 02/01/03
Posts: 8756
Loc: RI
I would use 75w90 in both and most synth's have the LSD additive if needed for your application.
_________________________
Those who say it cannot be done, should not interrupt the person doing it.
Your automaker lied!
Is this a spelling/grammar forum or BITOG?

Top
#1852458 - 04/10/10 07:21 PM Re: Ok to use 75W-90 Syn in Diff that req SAE 80? [Re: unDummy]
RageOfFury Offline


Registered: 11/15/09
Posts: 288
Loc: Ottawa, Canada
In the end I went with Yamalube Drive Shaft Gear Lube (SAE 80W-90).

Both diff fluids have never been changed since I bought the Kodiak back in 1999. hide Let me tell you, it was quite dark.
_________________________
2011 Jeep Grand Cherokee 4x4
Pentastar 3.6L V6
Pennzoil Platinum 5W-30 & Mopar MO-744 filter

Top