75W85 GL4 vs 75W85 GL4/GL5 vs 75w90 GL4

[slimypi]

Hello Everybody,

We just bought a used a Hyundai i10 (PA) 2012 1.2 liter Petrol car with ~132K Km on it and a manual transmission.

We want to maintain it before use and so we are contemplating an oil change (especially since these cars are generally used in urban conditions and by young people as a first car, so the trans must have been a little abused if we had to guess). Also, please note that this car will be used by the wife for 95% city driving, daily from home to work/gym/groceries( we have another car for longer travels).

The manual asks for 75w85 GL4 oil but I don't find any 75w85 synthetic oils here in Europe (FRANCE) beside Redline MT-85 which is $35/quart at the cheapest shop (online) but compliant with GL4. Yes you read that price right by the way.

My other options are :

- Mannol 8101 semi synthetic 75w85 GL4 ($8/quart) ==> People don't seem very fond of the brand in here and so I don't know if it is wise to put that in the gearbox. do you think it will be okay to put that in the GB ?

- Motul Motyl gear semi synthetic 75w85 GL4 AND GL5 ($10/quart) ==> this seems okay but there is the GL5 issue since people say to never put a GL5 oil in a GL4 gearbox because of possible corrosion of synchromesh. Is this a thing ?

- Castrol Multivehicle 75w90 Synthetic GL4 ==> It's synthetic, GL4 but not the correct weight and people tend to say that the gearbox will definately feel different with that oil because it's thick and the car won't shift good. any exeprience on that, do you really notice the difference ?

I am really confused about the oil to put in there besides the Redline which of course checks it all but will cost $75 with shipping...

Do you have any advices on this situation please ?

 

[Pablo]

What country are you in?

 

[slimypi]

What country are you in?

Sorry, FRANCE.
I will update the thread with that info, sorry.

 

[Pablo]

Sorry, FRANCE.
I will update the thread with that info, sorry.

Frankly try the Mannol. The 1.2L probably not putting a lot of stress on the MT. If the shift quality is good, then easy. If not go with the Motul next. Just because something is GL5 does not mean it will harm a gearbox especially if also GL4 and if manufacturer recommended for your application (ask Motul)

Most likely a 75W-90 would work in the south of France, especially summer. Winter in the north might be a bit much.

 

[ceecbtg]

Best easy option if not expensive the original Hyundia or KIA MTF 75w85 GL4.
If you want syn:
- Castrol Multivehicle 75w90 and sisters Ford 75w90 BO, Castrol BOT 130M, Volvo 1161723, Motorcraft MT-XT-QS. All works like 75w85 warm and very good cold
- Castrol Syntrans 75w85
- Tutela Geartech 75w85
Other options:
- GM 1940182 (93165290)
- Castrol BOT 402
- Motulgear 75w85 GL4/GL5
- Tutela Matrix 75w85
- Ravenol 75w85 GL4/GL5

 

[slimypi]

Frankly try the Mannol. The 1.2L probably not putting a lot of stress on the MT. If the shift quality is good, then easy. If not go with the Motul next. Just because something is GL5 does not mean it will harm a gearbox especially if also GL4 and if manufacturer recommended for your application (ask Motul)

Most likely a 75W-90 would work in the south of France, especially summer. Winter in the north might be a bit much.

The thing is, Mannol seems not to be trusted blindly because of previous contradictory claims from them on the norms and oil composition (see threads in here about that). And I am worried thety might not meet either the GL4 or the viscosity the bottle claims. otherwise I would have gone with it. Honestly I can't understand how their stuff can be SOO CHEAP.

 

[Pablo]

The thing is, Mannol seems not to be trusted blindly because of previous contradictory claims from them on the norms and oil composition (see threads in here about that). And I am worried thety might not meet either the GL4 or the viscosity the bottle claims. otherwise I would have gone with it. Honestly I can't understand how their stuff can be SOO CHEAP.

Great point! I just assumed (oops) such a brand I never heard of was OK in France.

See if you can buy Amsoil in France!

https://www.amsoil.com/p/amsoil-5w-30-manual-synchromesh-transmission-fluid-mtf/?zo=515729

 

[ceecbtg]

The thing is, Mannol seems not to be trusted blindly because of previous contradictory claims from them on the norms and oil composition (see threads in here about that). And I am worried thety might not meet either the GL4 or the viscosity the bottle claims. otherwise I would have gone with it. Honestly I can't understand how their stuff can be SOO CHEAP.

Base oils.

 

[slimypi]

Best easy option if not expensive the original Hyundia or KIA MTF 75w85 GL4.
If you want syn:
- Castrol Multivehicle 75w90 and sisters Ford 75w90 BO, Castrol BOT 130M, Volvo 1161723, Motorcraft MT-XT-QS. All works like 75w85 warm and very good cold
- Castrol Syntrans 75w85
- Tutela Geartech 75w85
Other options:
- GM 1940182 (93165290)
- Castrol BOT 402
- Motulgear 75w85 GL4/GL5
- Tutela Matrix 75w85
- Ravenol 75w85 GL4/GL5

THank you for your response,

No the oem hyundai oil is expensive here (quoted arround 40€/l from dealer).

Castrol Syntrans 75w85 would have been great but i could only find that in 20l jugs.

Petronas oil are very rare, but I'll look into that.Thanks !

Do you think the 75w90 will be too thick when cold ? can you even notice the difference and is there a specific risk for using "non recommended gear oil grade" ?

 

[ceecbtg]

These Castrol 75w90 will be perfect, they are true syn, TOP cold performance. Most 75w85 are false syn.

 

[slimypi]

These Castrol 75w90 will be perfect, they are true syn, TOP cold performance. Most 75w85 are false syn.

SO i've done some comparison, Please find below the spec comparison between the Redline MT-85 ( 75w85) and the castrol 75w90.

For Oil Geeks in here, how does this translate in cold conditions ? are these noticeable number differences ?

For me the pour point being so close between the 2 oils indicate similar "true life viscosity" isnt it ? then again the visosity is like 20% more for the 75w90...

I live in south of France so we do get 30°C climate for 7 months each year ( with July and August and some of september being arround 36-40 degrees).

- Redline MT-85 synthetic 75w85 :

• API Service Class: GL 4
• SAE Viscosity Grade (Motor Oil) : 5W30
• SAE Viscosity Grade (Gear Oil) : 75W85
• Viscosity @ 100°C : 12.0
• Viscosity @ 40°C : 61.1
• Viscosity Index : 198
• Pour Point, °C : -48
• Pour Point, °F : -54
• Brookfield Viscosity @ -40°C, Poise : 160

- Castrol 75w90 synthetic oil :

• Density @ 15C g/ml : 0.873
• Viscosity, Kinematic 100C mm²/s : 15.09
• Viscosity, Kinematic 40C mm²/s : 76
• Viscosity Index ISO 2909 : 226
• Pour Point °C: -54
• Flash Point, °C : 190
• Viscosity, Brookfield @ -40C(75W) (DIN 51398) mPa.s (cP) : 20000

 

[ceecbtg]

For your location regular 75w85 false syn is good.
Redline is super oil, chemical is different (stronger) than Castrol. May be you don't need it.
PDS info is relative, sometimes different test and sometimes spec like Castrol viscosity is not real, so little differences are useless.

 

[SubieRubyRoo]

Hello Everybody,

We just bought a used a Hyundai i10 (PA) 2012 1.2 liter Petrol car with ~132K Km on it and a manual transmission.

We want to maintain it before use and so we are contemplating an oil change (especially since these cars are generally used in urban conditions and by young people as a first car, so the trans must have been a little abused if we had to guess). Also, please note that this car will be used by the wife for 95% city driving, daily from home to work/gym/groceries( we have another car for longer travels).

The manual asks for 75w85 GL4 oil but I don't find any 75w85 synthetic oils here in Europe (FRANCE) beside Redline MT-85 which is $35/quart at the cheapest shop (online) but compliant with GL4. Yes you read that price right by the way.

My other options are :

- Mannol 8101 semi synthetic 75w85 GL4 ($8/quart) ==> People don't seem very fond of the brand in here and so I don't know if it is wise to put that in the gearbox. do you think it will be okay to put that in the GB ?

- Motul Motyl gear semi synthetic 75w85 GL4 AND GL5 ($10/quart) ==> this seems okay but there is the GL5 issue since people say to never put a GL5 oil in a GL4 gearbox because of possible corrosion of synchromesh. Is this a thing ?

- Castrol Multivehicle 75w90 Synthetic GL4 ==> It's synthetic, GL4 but not the correct weight and people tend to say that the gearbox will definately feel different with that oil because it's thick and the car won't shift good. any exeprience on that, do you really notice the difference ?

I am really confused about the oil to put in there besides the Redline which of course checks it all but will cost $75 with shipping...

Do you have any advices on this situation please ?

Motul Gear 300 75w90 is GL-4/GL-5 and I have used it in my Subaru transmissions. All good unless it includes operation below ~20*F; the first few shifts are extremely stiff and can be a burden for those with low arm strength or anyone who doesn’t like bending shift forks to grab first gear.

What’s your coldest temps experienced?

 

[slimypi]

Motul Gear 300 75w90 is GL-4/GL-5 and I have used it in my Subaru transmissions. All good unless it includes operation below ~20*F; the first few shifts are extremely stiff and can be a burden for those with low arm strength or anyone who doesn’t like bending shift forks to grab first gear.

What’s your coldest temps experienced?

Coldest is around -10°C during the night.

 

[slimypi]

For your location regular 75w85 false syn is good.
Redline is super oil, chemical is different (stronger) than Castrol. May be you don't need it.
PDS info is relative, sometimes different test and sometimes spec like Castrol viscosity is not real, so little differences are useless.

Good to know for the pds.
O really thought it meant something but I understand it's just to show that oil is serious and has been tested.

Redline is great but it got waay too expensive. I bought it previously for my i30 hyundai for 16€/quart. Now it's 32€/quart everywhere. Plus shipping.

 

[slimypi]

Best easy option if not expensive the original Hyundia or KIA MTF 75w85 GL4.
If you want syn:
- Castrol Multivehicle 75w90 and sisters Ford 75w90 BO, Castrol BOT 130M, Volvo 1161723, Motorcraft MT-XT-QS. All works like 75w85 warm and very good cold
- Castrol Syntrans 75w85
- Tutela Geartech 75w85
Other options:
- GM 1940182 (93165290)
- Castrol BOT 402
- Motulgear 75w85 GL4/GL5
- Tutela Matrix 75w85
- Ravenol 75w85 GL4/GL5

Ok,

Back with some Deal hunting updates.

So I've found some :
- Ravenol 75w85 GL4 & GL5 for $18/liter with shipping
- Petronas Tutela Matryx 75w85 GL4 for $12/liter with shipping.

Which of these 2 is better in your opinion ?

Petronas Spec is Spot on on the Viscosity and Norm but I don't know what are their oils worth. Matryx is fully synthetic ( as Ravenol).

Kind regards.

 

[ceecbtg]

Tutela Matrix is good price/quality. It's GL4. Red color. It's Petronas, not problem. It's not real full syn like most, but it has little real syn.
Ravenol is real syn based (not fully). Ravenol is good and some oils are TOP, not problem. It's GL5 compatible GL4. Red color I think too. If you want real syn it should be little more, anyway performance depend on additives, more syn is not always better in all cases.
Main difference (syn apart) is GL4 additive, Castrol/Tutela more classic GL4 vs Ravenol more GL5 rule. I won't enter which is better for GL4 case.

 

[930.engineering]

I had a similar task: My own Mini Cooper. BMW use Castrol-made its
own BMW MTF LT-4 75W-90 GL-4. FWIW I was looking for some GL-4
and dedicated 'MTF' only. Well, my own climate is different. Climate
ranges between -10°C and +30°C, so I probably could use 75W-85,
providing sufficient protection, but to noticed the same I did: Very few
options if at all. So I went for BMW's own BMW MTF LT-4 75W-90 GL-4.
I think you're fine with a marginally thicker 75W-90, as long as it's a true
GL-4 MTF. South of France means higher temps.
Dedicated MTFs come with appropriate FMs for your synchronizers while
many if not most combined GL-4/GL-5 likely don't provide.

I'd suggest these:

- Castrol Transmax Manual Multivehicle 75W-90 GL-4
- Castrol Manual Transaxle 75W-90 GL-4
- BMW MTF LT-4 75W-90 GL-4
- Redline MT-85 and MT-90
.

 

[slimypi]

I had a similar task: My own Mini Cooper. BMW use Castrol-made its
own BMW MTF LT-4 75W-90 GL-4. FWIW I was looking for some GL-4
and dedicated 'MTF' only. Well, my own climate is different. Climate
ranges between -10°C and +30°C, so I probably could use 75W-85,
providing sufficient protection, but to noticed the same I did: Very few
options if at all. So I went for BMW's own BMW MTF LT-4 75W-90 GL-4.
I think you're fine with a marginally thicker 75W-90, as long as it's a true
GL-4 MTF. South of France means higher temps.
Dedicated MTFs come with appropriate FMs for your synchronizers while
many if not most combined GL-4/GL-5 likely don't provide.

I'd suggest these:

- Castrol Transmax Manual Multivehicle 75W-90 GL-4
- Castrol Manual Transaxle 75W-90 GL-4
- BMW MTF LT-4 75W-90 GL-4
- Redline MT-85 and MT-90
.

Thank you.
I finally went with the redline mt-85, seemed the best choice and the price difference I'm sure is worth it.
Also, I wanted to go with Castrol or tutela 75w90 but it was very thick at ambiant temperature in the bottle than the redline which was a little thicker than water.
Tutela was waaaaay too thick, Castrol was noticeably thicker.

I've changed the oil yesterday and noticed that it was already changed but the ex-owner but I didn't recognize the color and the smell was weird.
It was a good idea changing it even though it was shifting great since I didn't know what the hell he had the mechanic put in it and knowing how they like to screw simple maintenance task arround here I wouldn't be suprised If he put anything from the jug he had around in the shop.

So good call all in all.

To anybody having the same dilemma: in a nutshell, go with either OEM or redline or Castrol with the correct viscosity and norm. Even though 5 viscosity difference seems a little but in reality it's quite a lot I found as mentioned in some other posts...

 

[Bailes1992]

Didn't see this thread until this morning.

Personally I use either Fuchs Sintofluid 75w80 or Millers Oils MTF 75w80 in most manual gearboxes. I think they both do 75w85 and 75w90 variations. I personally feel like Millers Oils MTF's give a slicker shift, but it's hard to gauge because I've never done a back to back with fresh fluid.