Gearboxes, gear oil, and levels

[Le_Combattant]

I just ordered 4 bottles of Top Tec MTF 5300 70W-75W.

But I just founded also MOTUL GEAR POWER FE 75W with almost the same specs...
My god, this story has no end

[Bepis]

There are already 8 pages of forum posts on just gear oil so a few more wont hurt

[JiSingh1]

There are already 8 pages of forum posts on just gear oil so a few more wont hurt

Never ending story thanks to the viscosity and chemical mixture differences ! Makes it hard to choose an oil even when it meets the VW specs.

I do not fancy spending £150 on 3l of original VW oil.

I just ordered 4 bottles of Top Tec MTF 5300 70W-75W.

But I just founded also MOTUL GEAR POWER FE 75W with almost the same specs...
My god, this story has no end

I saw the MOTUL one yesterday .. but oh well I've already found enough, lol.

Will you be using the MTF 5300 soon in your gearbox & comparing it to the FUCHS?

[Le_Combattant]

There are already 8 pages of forum posts on just gear oil so a few more wont hurt

Never ending story thanks to the viscosity and chemical mixture differences ! Makes it hard to choose an oil even when it meets the VW specs.

I do not fancy spending £150 on 3l of original VW oil.

I just ordered 4 bottles of Top Tec MTF 5300 70W-75W.

But I just founded also MOTUL GEAR POWER FE 75W with almost the same specs...
My god, this story has no end

I saw the MOTUL one yesterday .. but oh well I've already found enough, lol.

Will you be using the MTF 5300 soon in your gearbox & comparing it to the FUCHS?

I think yes.
I ordered more bottle than required to "flush" the gearbox.

Because of the s**t design, all oil can't be drained. So on the firt fill, I will drive the front wheels to "mixe" the oils and after drain the maxium I could and then, put new fresh oil.

[JiSingh1]

I think yes.
I ordered more bottle than required to "flush" the gearbox.

Because of the s**t design, all oil can't be drained. So on the firt fill, I will drive the front wheels to "mixe" the oils and after drain the maxium I could and then, put new fresh oil.

Ok that'll be nice to know. I shall wait before I order oil then, you can be the tester for us all, lol.

Is it not possible to drain it all with a tube and vacuum?

[Le_Combattant]

I think yes.
I ordered more bottle than required to "flush" the gearbox.

Because of the s**t design, all oil can't be drained. So on the firt fill, I will drive the front wheels to "mixe" the oils and after drain the maxium I could and then, put new fresh oil.

Ok that'll be nice to know. I shall wait before I order oil then, you can be the tester for us all, lol.

Is it not possible to drain it all with a tube and vacuum?

I never tried with a vacuum but it's possible to remove more by removing some screws at the bottom.

[JiSingh1]

I never tried with a vacuum but it's possible to remove more by removing some screws at the bottom.

From the little cap at the bottom? I always wondered what that piece is, but the cost of the sealant for it is expensive if I am correct.


Another thing is, it seems the original VW oil is not a pure synthetic, but is a Ester based formulation, from what I have been told.
https://bobistheoilguy.com/forums/threa ... st-6734292

[Le_Combattant]

I never tried with a vacuum but it's possible to remove more by removing some screws at the bottom.

From the little cap at the bottom? I always wondered what that piece is, but the cost of the sealant for it is expensive if I am correct.


Another thing is, it seems the original VW oil is not a pure synthetic, but is a Ester based formulation, from what I have been told.
https://bobistheoilguy.com/forums/threa ... st-6734292

Not the cap, I tried on the first oil change but I didn't remove it.

Okey, thanks for the link I will check this out.

EDIT: Now I'm reconsidering my purchase.

Liqui Moly or Wolf 75 FE ?

[JiSingh1]

EDIT: Now I'm reconsidering my purchase.

Liqui Moly or Wolf 75 FE ?

Why are you reconsidering?

The Liqui Moly is only recommended for VW it seems, whereas the Wolf is more rounded for other brands.

Also, the formulations seem different. Liqui Moly is the brand I have heard of before, but never heard of Wolf before.

[Le_Combattant]

EDIT: Now I'm reconsidering my purchase.

Liqui Moly or Wolf 75 FE ?

Why are you reconsidering?

The Liqui Moly is only recommended for VW it seems, whereas the Wolf is more rounded for other brands.

Also, the formulations seem different. Liqui Moly is the brand I have heard of before, but never heard of Wolf before.

After a night of reflextion, I will stuck with Liqui Moly.

[JiSingh1]

After a night of reflextion, I will stuck with Liqui Moly.

lol, fair enough. hope it works out,

I think the main additive for VW is ester. It is also present in the Fuchs oil, but it doesn't have it in the liqui moly, from what I can tell?

REACH # 01-2119493620-38
EC 931-384-6

[Le_Combattant]

After a night of reflextion, I will stuck with Liqui Moly.

lol, fair enough. hope it works out,

I think the main additive for VW is ester. It is also present in the Fuchs oil, but it doesn't have it in the liqui moly, from what I can tell?

REACH # 01-2119493620-38
EC 931-384-6

Could be an issue ?

[JiSingh1]

After a night of reflextion, I will stuck with Liqui Moly.

lol, fair enough. hope it works out,

I think the main additive for VW is ester. It is also present in the Fuchs oil, but it doesn't have it in the liqui moly, from what I can tell?

REACH # 01-2119493620-38
EC 931-384-6

Could be an issue ?

Hard to know. It doesn't seem present in many oils though. I would still think viscosity matters more than additives and the liqui moly is very good at this when warm.

[Le_Combattant]

lol, fair enough. hope it works out,

I think the main additive for VW is ester. It is also present in the Fuchs oil, but it doesn't have it in the liqui moly, from what I can tell?

REACH # 01-2119493620-38
EC 931-384-6

Could be an issue ?

Hard to know. It doesn't seem present in many oils though. I would still think viscosity matters more than additives and the liqui moly is very good at this when warm.

Maybe you are right.

In the Fuchs document, where did you see the ester additive ?

[JiSingh1]

Maybe you are right.

In the Fuchs document, where did you see the ester additive ?

So on the other forum I linked, I was told it is an Ester and the code in the original VW datasheet, it is 01-2119493620-38.

If you type this code into google, you will get the EC number 931-384-6, which is what is listed in Fuchs.