Recent Topics
ACDelco Dexos 0W20 UOA
by DanMiller
Today at 10:44 AM
Mopar window regulator (some assy. rqd.)
by dlundblad
Today at 10:27 AM
5.3L Silverado Water Pump Torque Specs
by Gito
Today at 10:25 AM
Rhino Ramps at Canadian Tire 50% off
by Snagglefoot
Today at 10:18 AM
What to do when your Glock jams
by bigj_16
Today at 10:13 AM
Pennzoil Platinum 5w30 vs 10w30
by Snagglefoot
Today at 09:09 AM
LM MoS2. Honest, if not appropriately tested?
by wemay
Today at 09:03 AM
Brisket flat on charcoal
by 04SE
Today at 08:45 AM
Weird Oil level question
by audia6
Today at 08:27 AM
DNA test and opening a can of worms
by WhyMe
Today at 08:11 AM
Ghetto testing a wheel speed sensor
by Nayov
Today at 06:23 AM
dash cam
by DAC2018
Today at 05:08 AM
WoO driver Jason Johnson injured
by bdcardinal
Today at 01:08 AM
Plastic burning smell when WOT
by Jaha24k
Today at 12:57 AM
Duckham's 15w50 Oil 12 one liter bottles
by Lolvoguy
Today at 12:00 AM
Ruger LCP .380
by PW01
Yesterday at 11:24 PM
Launching boat with stick shift
by troutfisher
Yesterday at 11:22 PM
Free oil
by Spitter
Yesterday at 10:53 PM
Porsche Panamera buying advice
by CharlieBauer
Yesterday at 10:04 PM
RC cars
by red7404
Yesterday at 09:36 PM
Newest Members
bwechols, bowupid, pod423, lemaitrix, azzid0906
65303 Registered Users
Who's Online
68 registered (93cruiser, AdmdeVilleneuve, andyd, 4WD, ammolab, 10 invisible), 1510 Guests and 64 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
65303 Members
67 Forums
285902 Topics
4771261 Posts

Max Online: 3590 @ 01/24/17 08:07 PM
Donate to BITOG
Page 1 of 2 1 2 >
Topic Options
#4541985 - 10/13/17 09:17 AM Everyone was ok using GL5 in manual trans in usa
zeng Offline


Registered: 09/01/15
Posts: 2189
Loc: Malaysia
... GL5 was good in manual transmissions for the past 20 to 30 years , true ??




..and there is a resurgence of GL4 in the past 3 years ...... attributable to marketing ?
GL4 and GL5 oils in manual transmissions
..at 13.25


So, wondering why the fuss on Bitog ?


Source:GearBoxVideo


Edited by zeng (10/13/17 09:23 AM)

Top
#4541998 - 10/13/17 09:37 AM Re: Everyone was ok using GL5 in manual trans in usa [Re: zeng]
knerml Offline


Registered: 04/05/05
Posts: 480
Loc: NE Ohio
Your car manufacturer specifies what oil to use.

Over the last 25 years, all of my cars (VW/Audi/Hyundai/Kia) used GL4.

This is not a USA thing.
_________________________
2015 Hyundai Elantra Sport 2.0 GDI Mobil 1 5W20 & OEM/Mann W811/80 Filter
2018 Hyundai Santa Fe Sport 2.0T GDI Castrol Edge 5W40 & OEM/Mann W811/80 Filter

Top
#4542010 - 10/13/17 09:49 AM Re: Everyone was ok using GL5 in manual trans in usa [Re: zeng]
skyactiv Offline


Registered: 03/02/13
Posts: 4405
Loc: The Midwest
It surprises me if there are actually more GL4 oil choices to day than there was 10 years ago. The percentage of passenger vehicles on the road with a manual transmission is declining every year.
I have used a GL5 MT-1 oil in a transmission once. It was too slippery and didn't allow fast gear changes without crunching the gears. I quickly swapped to a GL-4 oil , Sta-Lube 85W90 from Napa and everything was fine again.
_________________________
Wife: 15' Audi A4 quattro 6 speed manual
Me: 13' VW GTI 3 door 6 speed manual

Top
#4542016 - 10/13/17 09:52 AM Re: Everyone was ok using GL5 in manual trans in usa [Re: zeng]
IndyIan Offline


Registered: 09/23/08
Posts: 9092
Loc: Ontario, Canada
No GL-5 gear oil ever got into my manual transmissions. And they all have to gone to the scrap yard working fine. I'll keep on using GL-4 or what the manufacturer recommends.
_________________________
07 Focus ZXW, 5spd manual, 206km M1 5W30
18 Outback 2.5 CVT 5km FF

Top
#4542044 - 10/13/17 10:28 AM Re: Everyone was ok using GL5 in manual trans in usa [Re: zeng]
Oro_O Offline


Registered: 09/20/14
Posts: 1352
Loc: Seattle-ish, WA
I have counted a number of GL-4 lubes from major refiners that have left the market in the last 10 years. What are the new/“resurgence” ones? On his website, I am thinking it is referring to limited boutique oils like from Brad Penn, etc. Which is a poor substitute for the fact used to be able to go into an auto parts store and get them. They seem to be vastly less available now than a few years ago.

Top
#4542048 - 10/13/17 10:41 AM Re: Everyone was ok using GL5 in manual trans in usa [Re: zeng]
CELICA_XX Offline


Registered: 11/28/08
Posts: 861
Loc: Oklahoma
My old Toyota Supra allowed for either 4 or 5

I always used Mobil 75w-90 GL-5 because that's what was available at AutoZone back in the 90's



Now I use Amsoil MTG GL-4 for most manuals
_________________________
15 Toyota Prius - M1 EP 0w20
02 Toyota ECHO - Valv MaxLife Full Syn 5w30
97 Lexus LX450 - M1 0w40
93 Lexus LS400 - Valv MaxLife Full Syn 5w30

Top
#4542077 - 10/13/17 11:14 AM Re: Everyone was ok using GL5 in manual trans in usa [Re: Oro_O]
Jimzz Offline


Registered: 10/03/14
Posts: 1148
Loc: NoVA
Originally Posted By: Oro_O
I have counted a number of GL-4 lubes from major refiners that have left the market in the last 10 years. What are the new/“resurgence” ones? On his website, I am thinking it is referring to limited boutique oils like from Brad Penn, etc. Which is a poor substitute for the fact used to be able to go into an auto parts store and get them. They seem to be vastly less available now than a few years ago.



Yea its much harder to find GL-4 now then back when I was a tech, 20+ years ago. And when you are able to find it the price is higher as its a smaller bottler usually. Even amazon stopped carrying the valvoline 75W90 Gl4 I bought before.
_________________________
yup

Top
#4542085 - 10/13/17 11:25 AM Re: Everyone was ok using GL5 in manual trans in usa [Re: zeng]
ARCOgraphite Offline


Registered: 05/17/09
Posts: 11970
Loc: N.H, U.S.A.
what do you do in a Subaru with a hypoid combined Xaxle?
_________________________
2014 Nissan Rogue S CVT, OC#9 41392mi-QSUD10W30 + M110A CHAMP Filter; 2017 Subaru Crosstrek CVT OC#2 ?? mi-SOA/Idemitsu 0w20 + SOA Filter

Top
#4542128 - 10/13/17 12:42 PM Re: Everyone was ok using GL5 in manual trans in usa [Re: zeng]
69GTX Offline


Registered: 09/23/15
Posts: 3815
Loc: Connecticut
For the past 20 yrs numerous manual transmissions have been using factory specced ATF, never mind GL4 or GL5 fluids....such as GM T56's. Try using GL5 MTL's in almost any factory installed Tremec and I think a lot of them will fail or be much harder to shift. If this guy has done thousands of transmissions on GL5 only without a single failure, he probably hasn't done many Tremecs or those specifying 7 cSt ATF's. I can believe that in old Muncies, Saginaws, Chrysler 833's, etc. that GL5 probably is fine. You don't see many trans rebuilders recommending GL5 in ATF specced transmissions....usually they say just the opposite...don't ever use GL5.
_________________________
----------------

2001 Lincoln Cont 4.6L DOHC/ 39K mi / QS HM 5w30 / FUG XG2
1999 Camaro SS M6 /19K /Mobil 1 0w40 /Fram UG /GM MTL-ATF
1969 Ply GTX/RRs

Top
#4542150 - 10/13/17 01:05 PM Re: Everyone was ok using GL5 in manual trans in usa [Re: zeng]
69GTX Offline


Registered: 09/23/15
Posts: 3815
Loc: Connecticut
Maybe this guy hasn't seen GL5 fluids "corrode" synchronizer rings. But the wrong fluid can cause poor synchronization and increase synchro friction ring wear rates. Either way, it leads to shortened synchro life. Some ATF specced manual transmissions can't even take a GL4/GL5 fluid for a single day without constant grinding. I would submit if those were left in the vehicle for weeks and months, a very premature failure would occur.
_________________________
----------------

2001 Lincoln Cont 4.6L DOHC/ 39K mi / QS HM 5w30 / FUG XG2
1999 Camaro SS M6 /19K /Mobil 1 0w40 /Fram UG /GM MTL-ATF
1969 Ply GTX/RRs

Top
#4542156 - 10/13/17 01:15 PM Re: Everyone was ok using GL5 in manual trans in usa [Re: zeng]
MolaKule Offline


Registered: 06/05/02
Posts: 19042
Loc: Iowegia - USA
Originally Posted By: zeng



..So, wondering why the fuss on Bitog ?...




What fuss?

There has been a lot of misunderstanding with respect to GL-X protection ratings, the chemistry of MTF dedicated fluids, and Old verses New Technology of these fluids.

When GL-5 rated lubes were the only choice available, then that's what you had to use.

But then we learned about the effects of high treatment level of S-P chemistry on internals, and then GM led the industry in introducing MT dedicated fluids formulated by Texaco.


Edited by MolaKule (10/13/17 01:20 PM)

Top
#4542187 - 10/13/17 01:40 PM Re: Everyone was ok using GL5 in manual trans in usa [Re: zeng]
benjy Offline


Registered: 08/23/10
Posts: 870
Loc: pa
i have found Redline MT-90 to be excellent even in the touchy VAG manuals. my jetta was barely shifting using a new at the time Amsoil lube that was later discontinued, prolly about 2005 but a switch to MT-90 cured it, expensive but worth it IMO!!!


Edited by benjy (10/13/17 01:41 PM)

Top
#4542207 - 10/13/17 01:56 PM Re: Everyone was ok using GL5 in manual trans in usa [Re: zeng]
MolaKule Offline


Registered: 06/05/02
Posts: 19042
Loc: Iowegia - USA
See the Updated White Paper on Manual Transmissions and Lubricants:

https://bobistheoilguy.com/forums/ubbthreads.php/topics/4542195#Post4542195

Top
#4542255 - 10/13/17 02:57 PM Re: Everyone was ok using GL5 in manual trans in usa [Re: 69GTX]
CT8 Offline


Registered: 10/09/14
Posts: 11012
Loc: Idaho
Originally Posted By: 69GTX
For the past 20 yrs numerous manual transmissions have been using factory specced ATF, never mind GL4 or GL5 fluids....such as GM T56's. Try using GL5 MTL's in almost any factory installed Tremec and I think a lot of them will fail or be much harder to shift. If this guy has done thousands of transmissions on GL5 only without a single failure, he probably hasn't done many Tremecs or those specifying 7 cSt ATF's. I can believe that in old Muncies, Saginaws, Chrysler 833's, etc. that GL5 probably is fine. You don't see many trans rebuilders recommending GL5 in ATF specced transmissions....usually they say just the opposite...don't ever use GL5.
MUNCIES?
_________________________
"Don't let your preconceived notions get in the way of facts."
Geoff Metcalf

Top
#4542312 - 10/13/17 03:50 PM Re: Everyone was ok using GL5 in manual trans in usa [Re: zeng]
69GTX Offline


Registered: 09/23/15
Posts: 3815
Loc: Connecticut
_________________________
----------------

2001 Lincoln Cont 4.6L DOHC/ 39K mi / QS HM 5w30 / FUG XG2
1999 Camaro SS M6 /19K /Mobil 1 0w40 /Fram UG /GM MTL-ATF
1969 Ply GTX/RRs

Top
Page 1 of 2 1 2 >