GL4 vs GL5 gear oils
QViK
Could anyone explain the difference between API GL4 and API GL5 gear oils?
I'm just curious..
My gearbox is feeling quite notchy and I was wondering which gear oil would
help things. I'm pretty sure it's supposed to take GL5 gear oil. At the
moment it has 80w oil, and I was thinking of changing it to a 75w90. Is
this an area where a fully synthetic would be beneficial?
I'd appreciate your comments
Vik
nitro496 nospam
In very rough terms, GL4 mineral oil is a gear oil with a lower shear
point than GL5 mineral oil.
GL5 has an additive that raises the extreme pressure lubricity to
prevent gear tooth galling in hypoid gear sets in differentials.
GL5+ or GL6 oil is for LSD, it contains an additive that increases the
slip in a limited slip diff, so it does not feel too knotchy, and will
not cause the tyres to chirp.
All the rules go out the window when synthetics are used. Some
synthetic GL4 oils have a higher shear point that GL5 minerals, but no
hypoid additive, so they can not be rated GL5.
The hypoid additive goes off with time and does not drive the syncros
properly. The indication that your gear box has an oil, not
mechanical, problem is a stiff shift when cold that gets better when
warm and crunches when hot. This is a typical GL5 in a syncro gear box
problem.
Because there is a great need for the correct oil to be specified for
your box and driving style you need a large choice of oils. Red Line
Oil have 6 varieties for you to choose from, depending entirely on
your need. No other oil company comes close to this service, most will
just recommend the same stuff you are having problems with now.
Feel free to call me at a reasonable time in West Australia and I will
tell you more and make a recommendation for your car.
Red Line Oil has stock in most states and is available from the best
speed shops in Australia, they just do not know it yet. If you have a
favourite speed shop or mechanic you can tell them to call me too,
LOL.
Regards
STU BOND
RED LINE OIL
0408 46 4455
On Fri, 4 Aug 2000 02:23:05 +1000, "QViK" <qvik@iname|delete|.com>
wrote:
D Walford
fix this type of problem.
Any good speed shop/spare parts place should stock them.
Daryl
nitro496 nospam
you "supposed to fix this type of problem."
Here is a little story just for you.
When I met the team from Kleenflo Exhaust Victoria at the WA round of
the GTP series they were out of racing because their Honda Integra R
could not do 5 laps of the track without severe gear clash.
They had Honda Technicians telling them the gear box was stuffed and
they could not race and I foolishly walked in to their camp and gave
them a Red Line Oil card, not to sell anything but to assure them that
if they heard about Red Line Oil from Team Honda USA, Real Time Racing
USA or anyone racing an Integra R or Accura in the USA they would know
how to contact us in Australia.
An hour later they called me on the mobile and Peter Phelan said if I
would stand in his pit Sunday Morning he would go to Osborne Park at
5pm (About 30km in peak hour traffic, Friday arvo) to get some oil to
try. They said the car was having shift problems and would not be able
to race at all as it was and Honda had offered a new gear box when
they got back to Melbourne.
They got the oil and when I caught up with them Saturday they had just
completed warm up with ten laps and no clash. Then the showed me the 4
other brands of oil they had tried on Friday. From memory they were
Castrol, Mobil, Amsoil 2000 and something else ??? None had done a
damned thing to solve their problems. They went out that arvo and won
their class and have been leading the points ever since.
I believe the other Honda Integra R racing is on it's 3rd gear box
this season. No need to believe me, talk to Mark at Kleenflo Exhaust
in Victoria, sorry I do not have the address or phone number but they
may be out east in Cranbourne ???
The oil they used is designed primarily for the European trans axle
market and works beautifully in any syncromesh gear box.
Call me for more details.
Regards
STU BOND
Red Line Oil
0408 46 4455
On Fri, 04 Aug 2000 11:49:56 +1000, D Walford <wal...@primus.com.au>
wrote:
D Walford
designed to fix notchy gearshifts when cold.
Oils designed for a specific application may work better but aren't
easily obtained by the average person so thats why I suggested trying an
oil that is easy to get.
Its good that you were able to get them back on the track and I don't
doubt your story but if the gearbox in the Honda is such that it needs
such a specialised oil just to function it must be a crap gearbox and
I'm glad my son's Honda is an auto.
Daryl
nitro496, nospam, @hotmail.com wrote:
>
> If you do not mind me stating the obvious here D Walford. and to quote
> you "supposed to fix this type of problem."
>
> Here is a little story just for you.
>
> When I met the team from Kleenflo Exhaust Victoria at the WA round of
> the GTP series they were out of racing because their Honda Integra R
> could not do 5 laps of the track without severe gear clash.
>
> They had Honda Technicians telling them the gear box was stuffed and
> they could not race and I foolishly walked in to their camp and gave
> them a Red Line Oil card, not to sell anything but to assure them that
> if they heard about Red Line Oil from Team Honda USA, Real Time Racing
> USA or anyone racing an Integra R or Accura in the USA they would know
> how to contact us in Australia.
>
> An hour later they called me on the mobile and Peter Phelan said if I
> would stand in his pit Sunday Morning he would go to Osborne Park at
> 5pm (About 30km in peak hour traffic, Friday arvo) to get some oil to
> try. They said the car was having shift problems and would not be able
> to race at all as it was and Honda had offered a new gear box when
> they got back to Melbourne.
>
>snipped..........
nitro496 nospam
that can be light enough to work cold and not fail the syncro mesh
when sticking hot, ( over 120c )
you would be supprized at the reasoning for these manufactures putting
a GL% diff oil in to there manual gear boxes.
Same as the strange thought process, putting gl2 auto trans fluid in
to a holden or ford gear box. It all has to do with warrenty
percentages, denying warrenty, shift feel when new, production cost,
supplier branding and lots of othe money in the bank for the
manufacturer thought processes.
where would you like me to start >??????????
Regards
STU BOND
On Fri, 04 Aug 2000 21:24:48 +1000, D Walford <wal...@primus.com.au>
wrote:
>I've used and noticed improvement in several gearbox's using oils
QViK
>Hi QViK, what make and model of car is it ?
It's a 1992 Peugeot 205 Si. It has a BE3 5 speed gearbox.
nitro496 nospam
On Sat, 5 Aug 2000 19:40:46 +1000, "QViK" <qvik@iname|delete|.com>
wrote:
>
>
>>Hi QViK, what make and model of car is it ?
>
>It's a 1992 Peugeot 205 Si. It has a BE3 5 speed gearbox.
Red Line Oil MT 90 gear oil.
Regards
STU B
QViK
>>>>It's a 1992 Peugeot 205 Si. It has a BE3 5 speed gearbox.
>
>Red Line Oil MT 90 gear oil.
according to the Red Line Oil website, that's a GL4 gear oil... I've just
taken a look at my handbook, and it says that I should use 75w80 GL5 gear
oil. Given that my gear box has been topped up with 80w everytime my
driveshafts have been removed/replaced, would this be part of my problem?
Vik.
nitro496 nospam
wrote:
>howdy
If the hand book insists on a GL5 and you do not want to put diff oil
in to your box, then Red Line Oil 75w 90 NS Gear Oil will do. This is
also a recommended oil for the Alfa Romeo Trans axle. The NS is a GL5
sheer point oil with No Slippery diff additive, so the syncro will
work more effectively.
Regards
STU BOND