Motul gear and differential fluids

[cavlovic]

Hi guys.

I own a 2000 B5 S4 and its time to change front and rear differential fluids. I can't buy any of the fluids you suggest in this forum, except for Motul. What kind of motul fluids should I buy for front and rear differentials? What quantity?

Secont thing is transmission fluid. I think it is still factory fluid, and I read people suggested it's good to replace it. I do get a little grinding when shifting to second gear. What kind of motul fluid should I get for transmission?

Here's the link to fluids. I did some research, but I would like an advice from you that know much more about cars than me.

My car has manual gearbox.

My car has 65k miles on clock.

Thanks for help!

[*Blue-Angel*]

ECS tuning has the motul fluids your looking for. Shipping and cost of the product are a little higher than ull find elsewhere.

[Sales@RAI]

we have the fluids as well!

http://www.raimotorsport.com/category-s/3060.htm

[J-b5]

im running the motul 300 gl4/5 fluid in my trans now. its excellent. far better than the redline i had in there before.

[cavlovic]

So Motul Gear 300 75w90 is good for both differentials and transmission?

[*Blue-Angel*]

No 300 is a gl4 fluid they have a different 75-90 fluid that is gl5 for the rear diff.

[cavlovic]

Here are specs for Motul Gear 300:
STANDARDS
API GL4 and GL5
MIL-L-2105D

Does it mean it's for both front/real diff and also for tranny?

Anyone here uses Motul fluids?

Thanks for your reply!

[97B518TQM]

Damn, I boughty some Redline tranny fluid from JHM. Is Motul really really better than Redline?

[*Blue-Angel*]

Ok so its both like amsoil. But they also sell a gl5 only fluid. The 300 is meant for the tranny the other more suited to rear diff.

I use 300 in my tranny and lubromoly in the rear diff.

Amsoil in my mazda tranny.

[J-b5]

Damn, I boughty some Redline tranny fluid from JHM. Is Motul really really better than Redline?

yes. much smoother. redline does NOT meet VW/audi spec.

[NYEuroTuner]

Royal Purple. =)

[J-b5]

That stuff is junk man. What are you thinking?

[*Blue-Angel*]

^ LoL

[J-b5]

damn he must have been kidding. lol...

[Scotty@Advanced]

Damn, I boughty some Redline tranny fluid from JHM. Is Motul really really better than Redline?

Yes

[J-b5]

Hey scot it was me you were talking to about this, thanks for convincing me..

[NYEuroTuner]

damn he must have been kidding. lol...

Of course.

Stick with Mobile 1, Amsoil, Motul

[The_Jerbel]

yes. much smoother. redline does NOT meet VW/audi spec.

Oh please. I'd like to know where you got the info on that.

[Dowskeet]

Anyone have a DIY on removing/flushing the old fluid and putting in the new stuff. My tranny is in need of a change soon.

[KNaudi]

Anyone have a DIY on removing/flushing the old fluid and putting in the new stuff. My tranny is in need of a change soon.

search but here's one that I used specifically for the pics: http://www.s4forum.com/forums/showthread.php?t=1203

these will help too

[J-b5]

Oh please. I'd like to know where you got the info on that.

Prove to me that it does.

[The_Jerbel]

I'm not the one making wild claims. The ball is in your court to prove that your claim is true. Show me where you got the information that says that Redline does NOT meet Audi/VW spec. Also, while you're at it, prove to me that Motul, Amsoil, etc. DO meet Audi/VW spec.

Audi spec says SAE 75W90 GL-4 fluid. Redline MT-90 is a GL-4 oil, and it's also SAE 75W90. Looks like it meets Audi spec to me.

[Scotty@Advanced]

I'm not the one making wild claims. The ball is in your court to prove that your claim is true. Show me where you got the information that says that Redline does NOT meet Audi/VW spec. Also, while you're at it, prove to me that Motul, Amsoil, etc. DO meet Audi/VW spec.

Audi spec says SAE 75W90 GL-4 fluid. Redline MT-90 is a GL-4 oil, and it's also SAE 75W90. Looks like it meets Audi spec to me.

You've got it a bit backwards. Audi's G50 (superceeded to G70 IIRC) gear fluid is a GL4 75W90 SAE API rating, however just because an oil is a GL4 75W90 rating does not mean that the lubricant meets the same specifications as the Manufacturers fluid even if that fluid is stated as being a GL4 75W90. For a fluid to meet a manufacturers specification exactly, the fluid must exhibit the same properties as the manufacturer's recommended fluid, those properties, being shear strength, viscosity, pour point, opacity, .. There's a couple dozen different properties lubricants are evaluated against, and unless the fluid manufacturer compares their fluid against the manufacturer's fluid the fluid in question cannot be said to meet a certain equipment manufacturers specs.

Case in point VW's Pumpe Deuse engine oil is a 10W30 synthetic motor oil, however put any plain 10W30 motor oil in a pumpe Deuse engine and you'll toast the cam lobes in no time, hence why VW starting using the 505-507 designation of motor oils.

The big problem with aftermarket fluids is that the fluid manufacturer will attempt to make a "1 size fits all" lubricant for all equipment out there which might be great for 80 percent of the market. When a manufacturer specifies a certain fluid for a certain product, they have tailored that lubricant specifically for their piece of equipment.

The VW DSG gear fluid is also a 75W gear oil however putting something other than the proper TL 521 82 specification will quickly cost you several thousand dollars in replacement clutches.

[The_Jerbel]

^ I definitely agree with you 100%. You've kind of proven my point, actually. All Audi has said is "GL-4" and "SAE 75w90". I haven't ever seen any other published specs. Unless Audi has come out with an outline of 01E trans oil specs, a guy can't make a claim one way or the other. Saying that Redline does not meet Audi specs, or that Motul does meet Audi specs, is a wild claim, and is unprovable.

If anybody can show some data that states something different, I'm completely open to that. Throwing out wild claims based off of brand loyalty or non-scientific opinions is not what moves the community forward.

[Scotty@Advanced]

Anyone have a DIY on removing/flushing the old fluid and putting in the new stuff. My tranny is in need of a change soon.

There's not much you can do to flush the gearbox, but I'd drain the old fluid shortly after driving the car as it will keep particles suspended in the oil (if you let it sit the crap will coalesce in the nooks and crannies of the case and remain to be mixed in with the new fluid.

I'd also clean off the magnets, which isn't easily done, you have to remove the diff cover and diff to get to the circular magnet in the front of the box, and remove the torsen center diff and output flange to get to the 2 rectangular rear magnets, and don't forget to remove the plastic oil collector and take it apart there's another magnet in there.

[michael66899]

^thanks for the info, so do you recommend the Motul 300 then?

[Dowskeet]

^thanks for the info, so do you recommend the Motul 300 then?

x2... What about the tranny and diff if you went with Motul?

[*Blue-Angel*]

Motul 300 in tranny
Motul Motylgear Technosynthese 75-90 in Diff

[GetBoosted84]

I'd like to see some data on why red line doesn't meet audi specs as well. I've never had an issue with their products.

[Scotty@Advanced]

^thanks for the info, so do you recommend the Motul 300 then?

Yes that's what I recommend.

[Nadrealista]

Here are specs for Motul Gear 300:
STANDARDS
API GL4 and GL5
MIL-L-2105D

Does it mean it's for both front/real diff and also for tranny?

Anyone here uses Motul fluids?

Thanks for your reply!

Ja to ulje (Motul Gear 300) koristim u mom autu i odlicno je, dosta bolje od Redline ulja. Slobodno ga stavi u mjenjac i diferencijal!

Pozdrav,
Dejan

[GetBoosted84]

So did anyone have any evidence that indicates that Redline doesn't meet Audi's specifications? I'm curious if J-b5's claims held any water because I've found nothing that supports that in my searching.

[The_Jerbel]

Somehow I doubt you'll hear anything more about it.

[*Blue-Angel*]

Honestly I dont think anyone can make a claim like that as there is no where, where anything is said to prove otherwise.

The only company that I have seen, period to state that they do meet audi recommendations is Lubro-Moly.

[J-b5]

Somehow I doubt you'll hear anything more about it.

Tons of info on the web. I did my research and all i really need to know is that the redline shifted like crap in my transmission and caused problems less than 3K into the refill. The motul is working far better.

I really dont feel the need to prove anything to you. As far as making little comments trying to undermine me, don't.

But since you are the big expert, by all means fire up the white-paper reports that prove redline meets or exceeds VW/Audi specs. Im not shilling for motul, all i said is its better in my direct experience and what i have read online proves it to me.

[J-b5]

Honestly I dont think anyone can make a claim like that as there is no where, where anything is said to prove otherwise.

The only company that I have seen, period to state that they do meet audi recommendations is Lubro-Moly.

Yep. The motul does not specify that it meets the audi spec. Specifically as its got a higher low temperature viscosity that makes it unsuitable for cold weather conditions. VW/audi trans fluids have a weird formulation that was set up to address the cold weather performance issues that customers would complain about. However as this is a summer car, and a refill with the high performance audi fluid would cost three times as much. The motul works very well for what i use the car for. Ive used the OEM fluid and it just does not last long enough to justify the expense.

[J-b5]

http://forums.tdiclub.com/showthread...=132884&page=6

http://www.bobistheoilguy.com/forums...&Number=706793


Some of the stuff i was reading, not all mind you but enough raw information that you can see that arguing about this stuff can be a full time job.

BTW ive saved my old oil, and have some virgin redline left over. If anyone wants to paypal me, ill have both samples tested, and you can see how much this stuff sheared down in less than 3K of driving and one or two track days... I dont really care to drop 50 bucks this way but in the interest of science, feel free to send a donation my way. ;)

[MacDaddy]

the reason redline fluid isn't certified is because certification costs alot of money, not because the fluid doesn't meet or exceed the requirements (in redlines case i'm sure its the latter) their engine oils aren't even API certified but the oil gets used in lots and lots of high performance applications without issue.

I like redline because your paying for the product and thats about it, not like Mobil1 where half of what you pay for it is going to their huge advertising budget and money they give to auto manufacturers so their logo is on the oil cap of a cars engine.

[J-b5]

LOL ok. At least i substantiated my opinion with a direct comparison between two product on my own car in racing and regular driving conditions. So because a company is successful enough to have the budget to support racing teams and advertising, the product must be questionable? That doesn't make a lot of sense.

[GetBoosted84]

After reviewing those threads that were posted I fail to see where someone pointed out that Redline "does NOT meet VW/audi spec". Those threads merely show that Motul makes a good product which Jerbel was not trying to refute you on from what I have read. I'm certainly not saying that Motul makes a bad product at all. In fact I have found (in my own research) that people have been quite pleased with their products. Granted I have also found that people are quite happy with Redline's as well.

If you want to say that you tried it and you didn't like it for x, y, z reasons then that makes sense and that is useful information for everyone. But please refrain from posting up false (and unsubstantiated) claims on here because that does nothing to help the community.