Synthetic gear oil vs petroleum gear oil - Suzuki Forums: Suzuki Forum Site
Suzuki Forum Suzuki Forums

» Auto Insurance
» Featured Product
Wheel & Tire Center

Go Back   Suzuki Forums: Suzuki Forum Site > Suzuki Models > Suzuki Jimny, Sierra & Samurai Forum
Register Home Forum Active Topics Photo Gallery Garage Search Today's Posts Mark Forums Read Auto EscrowAuto LoansInsurance

Suzuki-Forums.com is the premier Suzuki Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 01-31-2011, 11:11 AM   #1 (permalink)
Member
 
HOARDER's Avatar
 
Join Date: Jan 2011
Location: USA
Posts: 94
Gallery: 0
HOARDER is on a distinguished road
Default Synthetic gear oil vs petroleum gear oil

I HAVE ALWAYS USED GOOD OLE CONVENTIONAL 80-90W IN MY TRANS/T-CASE, AND AXLES. Has anyone tried any synthetic gear oils? I'm considering Lucase products.
__________________
1987 SAMURAI HARD TOP W/ PETROWORKS 40MM CV CARB!
HOARDER is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 01-31-2011, 12:13 PM   #2 (permalink)
Moderator
 
Join Date: Mar 2009
Location: Georgetown, Guyana
Posts: 7,697
Gallery: 0
fordem is on a distinguished road
Default

Mobil1 75w90 full synthetic for me - at least until the next change - when I'll probably go with whatever comparable product Valvoline has.

The local Exxon-Mobil sales network was bought out and they're no longer carrying the Mobil1 products.
fordem is offline   Reply With Quote Quick reply to this message
Old 01-31-2011, 12:15 PM   #3 (permalink)
Member
 
HOARDER's Avatar
 
Join Date: Jan 2011
Location: USA
Posts: 94
Gallery: 0
HOARDER is on a distinguished road
Default

Quote:
Originally Posted by fordem View Post
Mobil1 75w90 full synthetic for me - at least until the next change - when I'll probably go with whatever comparable product Valvoline has.

The local Exxon-Mobil sales network was bought out and they're no longer carrying the Mobil1 products.
Did you notice any difference in the trans/t-case operation?
__________________
1987 SAMURAI HARD TOP W/ PETROWORKS 40MM CV CARB!
HOARDER is offline   Reply With Quote Quick reply to this message
Old 01-31-2011, 01:11 PM   #4 (permalink)
Moderator
 
Join Date: Mar 2009
Location: Georgetown, Guyana
Posts: 7,697
Gallery: 0
fordem is on a distinguished road
Default

On the Vitara - no - on my Swift - definitely, smoother, sweeter - like the proverbial hot knife through butter.
fordem is offline   Reply With Quote Quick reply to this message
Old 02-01-2011, 01:24 AM   #5 (permalink)
Mof
Member
 
Mof's Avatar
 
Join Date: Oct 2010
Location: New Zealand
Posts: 76
Gallery: 14
Mof is on a distinguished road
Default

I put Synthetic 75W90 in my sammi trans, the synchros didnt like it and would crunch in every gear change, even 5th.
So I changed back to standard 80W90
__________________
The navigator made me do it!
http://www.lan-cor.com
Mof is offline   Reply With Quote Quick reply to this message
Old 02-01-2011, 03:38 AM   #6 (permalink)
Full Member
 
Join Date: Jan 2011
Location: Darwin N.T.
Posts: 105
Gallery: 5
lokdzuk is on a distinguished road
Garage
Default

i use penrite comp diff oil in my diffs and it has made a big difference there alot quieter and they feel like there smoother
lokdzuk is offline   Reply With Quote Quick reply to this message
Old 02-01-2011, 10:04 AM   #7 (permalink)
Member
 
HOARDER's Avatar
 
Join Date: Jan 2011
Location: USA
Posts: 94
Gallery: 0
HOARDER is on a distinguished road
Default

According to the info I found, the axles prefer a GL-5 Synthetic, as where the tranny+tcase use a GL-4 prefereably non synthetic.

So I'm going to order a few qts of conventional lucas for the trans+tcase, and a few qts of full synthetic for the axles. I'm going to try the semi synthetic in the engine.


I'll report the results.
__________________
1987 SAMURAI HARD TOP W/ PETROWORKS 40MM CV CARB!
HOARDER is offline   Reply With Quote Quick reply to this message
Old 02-01-2011, 11:28 AM   #8 (permalink)
Moderator
 
Join Date: Mar 2009
Location: Georgetown, Guyana
Posts: 7,697
Gallery: 0
fordem is on a distinguished road
Default

Here's the story behind the GL4/GL5 thing.

GL5 oils are EP (extreme pressure) rated for use with hypoid gears such as found in the differentials, the early GL5 oils used sulphur as an EP additive, and under the right combination of heat & pressure the sulphur would attack the softer bronze components in a transmission.

Later GL5 oils no longer use sulphur and will be marked something along the lines of "yellow metal friendly", referring to the color of the brass & copper - these oils are safe in a transmission or transfer case.

By all means use what ever oil you wish in your vehicle, but for those who cannot find a GL4 oil, you can use a GL5, provided it is yellow metal friendly.

As far as using synthetics in transmissions goes - Suzuki has no recommendations either way, at least none that I've seen, but intenret lore contains such comments as it's too slippery for the syncromesh to work - as far as I'm concerned - HOGWASH! I've been running full synthetic, GL5 Mobil1 75W90 in one of my transmissions for over 15 years - and that's the one I refer to above as shifting like a hot knife through butter. I'll never put a conventional oil back in there.

Last edited by fordem; 02-01-2011 at 11:34 AM.
fordem is offline   Reply With Quote Quick reply to this message
Old 02-02-2011, 01:34 PM   #9 (permalink)
Member
 
Join Date: Dec 2010
Location: San Bernardino Ca
Posts: 99
Gallery: 0
firstsami is on a distinguished road
Default

[QUOTE=fordem;263974]Here's the story behind the GL4/GL5 thing.

GL5 oils are EP (extreme pressure) rated for use with hypoid gears such as found in the differentials, the early GL5 oils used sulphur as an EP additive, and under the right combination of heat & pressure the sulphur would attack the softer bronze components in a transmission.

Later GL5 oils no longer use sulphur and will be marked something along the lines of "yellow metal friendly", referring to the color of the brass & copper - these oils are safe in a transmission or transfer case.

By all means use what ever oil you wish in your vehicle, but for those who cannot find a GL4 oil, you can use a GL5, provided it is yellow metal friendly.

As far as using synthetics in transmissions goes - Suzuki has no recommendations either way, at least none that I've seen, but intenret lore contains such comments as it's too slippery for the syncromesh to work - as far as I'm concerned - HOGWASH! I've been running full synthetic, GL5 Mobil1 75W90 in one of my transmissions for over 15 years - and that's the one I refer to above as shifting like a hot knife through butter. I'll never put a conventional oil back in there.[/QUOTE
My manual calls for gl4 or 5 in T/c and trans. Isnt either just fine? Got me thinking I need to change fluid now!
firstsami is offline   Reply With Quote Quick reply to this message
Old 02-02-2011, 04:22 PM   #10 (permalink)
Moderator
 
Join Date: Mar 2009
Location: Georgetown, Guyana
Posts: 7,697
Gallery: 0
fordem is on a distinguished road
Default

If your manual says either GL4 or GL5, then make your choice from what's available in your neck of the woods - but I'm going to guess that you're not driving a 99~05 GV (you're posting in the 99~05GV section), because that's not in my manual.
fordem is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

  Suzuki Forums: Suzuki Forum Site > Suzuki Models > Suzuki Jimny, Sierra & Samurai Forum

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Suzuki Forums: Suzuki Forum Site forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Powered by vBadvanced CMPS v3.2.2

All times are GMT -5. The time now is 12:37 AM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.3.2
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.