NEVER USE GEAR OIL IN DIFFERENTIALS.

[@LA_Commander]

I think the speaker is using British terms which may confuse some viewers. In the US, we use "gear oil" for our front or rear differentials. When the British say "gear box oil" we say "manual transmission fluid" . Which is similar to gear oil but not the same. Then with 4WD vehicles there is also a transfer case, which normally uses specific "transfer case fluid" depending on make & model. I hope that helps to clear up some of the confusion. So in rear diffs use GL5 oil and in manual transmissions with synchronized gears, use GL4 fluid. Hope that helps.

[@HellaMeiste]

I had accidentally topped up my car with recommended fluid for 6 speed Manual transmission with marked as GL-4/ GL-5 ( dual) into Rear differential ( without LSD) that probably need GL-5 fluids about 300 ml , so basically now the Diff box has 300ml ( gl-4/gl-5) and 800 ml OE ( differential OE fluid) What do you think will happen to the DIFF ? Thanks

[@LA_Commander]

@@HellaMeiste It sounds like it should not be a problem at all. I would not be concerned about it. Is there a reason why your diff was low on fluid? Why didn't you just drain all the fluid and refill with fresh fluid? If you don't mind my asking.

[@HellaMeiste]

@@LA_Commander Oh thank you, it’s not any leaking cause etc but it was my bad when i loosen the filler plug for checking the car was not in level position away too low so spilled out and i just had fluid for Manual Gl-4/GL-5 left in bottle around 400ml Btw thank you If this is not going too bad for the diff

[@stevejanejamesjassteph5903]

Well spoken brother. Very clear information !!

[@martinkimani9546]

Thanks for this info. Most people will get enlightened.

[@premraj2817]

That was a good presentation

[@fj9460-lr]

Most informative and well received: thank you!

[@hollygolby4436]

very well explained, thank you.

[@hendryLW]

THIS GUY is very excellent knowledgeable about gear oil & differential oil. i wonder CAN I USE LIMITED SLIP 75W-90 INSTEAD OF LIMITED SLIP 80W-90? thanks

[@zefini7397]

Muito claras essas explanações e muito bem fundamentadas também. Mas no Manual do Proprietário da minha Mitsubishi L200 ano 2021 de câmbio mecânico manual está muito clara também a recomendação da fabricante Mitsubishi de se usar sempre o mesmo lubrificante de API EP GL-5 e SAE 75w-90 semi-sintético tanto nos diferenciais dianteiro e traseiro, quanto na caixa de marchas e também na caixa de redução 4x4, ou seja, em todos esses pontos um único lubrificante. Outra coisa que me chamou a atenção é que no rótulo da embalagem desse lubrificante que atende essas especificações acima mencionadas no rótulo (trata-se do Petrobras Lubrax Gold EP GL-5 e GL-4 75w-90) também consta essas duas informações de especificações GL-5 e GL-4 simultaneamente, ou seja, atende tanto as demandas de serviços GL-5 quanto as demandas de serviços GL-4. Repiso, essas são as recomendações da fabricante Mitsubishi de usar sempre as mesmas especificações em todos esses lugares de transmissões de forças: diferenciais (traseiro e dianteiro), caixa de marchas manuais e tbm caixa de redução 4x4.

[@jeremyvilla467]

Very hepful info for gear box and differential box

[@Mike_Savin]

So which one should i use for my matic 160 cc motorcycle transmission ? ... GL4 ? ... GL5 ? ... Or just use engine oil like 5w40,10w30, 15w40 ?

[@Mike_The_Hog_A_Nator]

I have an 02' Blazer ZR2 with the 8.5" 10 bolt & G80 locker. I've read that no additive is to be added to a rear-end with the G80 locker & calls for 85-90 gear oil.

[@LA_Commander]

If you have a locker then you don't have a limited slip unit, so no limited slip additive is required

[@SadMidoriya]

Thanks boss,very crucial info...

[@paulhunter123]

im going round in circles can someone tell me what fluid i should use for my 1980s bmw differential oil. Owners manual asks for SAE-90 Mineral based oil.

[@artincorona]

What is he referring to when he says gear box? Is he talking about the transfer case? Or a manual transmission?

[@LA_Commander]

The British say "gear box" while we Americans say "manual transmission". This man sounds African and they use the British style English.

[@Antique803]

Do you need an additive in limited slip differentials in light pickup trucks?

[@LA_Commander]

You always need an additive with limited slip gears

[@alphabeta123100]

Is 85w-90 GL-5 suitable ?

[@wackyp]

Excellent video. I believe North Americans will hear gear box to mean transmission.

[@Saul_Goodman_Criminal_Lawyer]

You're right and wrong at the same time, there are vehicles that only require SAE 90 viscosity as long as it's GL-5.

[@paulhunter123]

my 1980s bmw car requires SAE-90 Mineral oil for the diff. do you know what i should use?

[@Saul_Goodman_Criminal_Lawyer]

@@paulhunter123 you must read the users manual of your vehicle

[@LA_Commander]

​@@paulhunter12375w-90 is just one

[@davidvelc454]

What, gearbox in cars with front engine and FWD have differential in gearbox...

[@LA_Commander]

Front wheel drive cars have a transaxle. So it's the transmission and differential combined. Use the specific fluid stated in your owner's manual for that.

[@fortheLOVEofMODsMike]

Graziano 6 speed manual has differential contained within the gearbox...... Now what ? It calls for 75w90 and that means no choice.. it's running through the differential as well (audi R8 / Gallardo) ??

[@clbe26]

Our 5 family car its a van and suv i read the owners manual it says: Use sae 90 Use sae 75w90 Use sae 85w90

[@rud8051]

can u substitute 80w90 non syn with 75w90 synthetic ?

[@666dynomax]

yes do not cross gl3 with gl5 applications, and gl4/5 is not compatible with gl3.

[@RED97761]

I have Chinese MG RX8 car with two differentials with limited slip front and back. And user manual says 80w90. And nothing about GL5 or 4. Based on your information what type of lubricant is batter ? Hope to hear from you

[@Nick-cq7bz]

Limited slip GL 5 of course

[@alphabeta123100]

What about transfer case oil ? Is it same as differential oil ? My Toyota rav4 diesel & automatic gear; gear is ATF , thank you for explaining the differences .

[@LA_Commander]

Not necessarily. Depending on make and model they all differ. Best to read your owner's manual and use what it states

[@mohdibrahim1350]

It says GL5 somewhere close to the drain plug

[@josephbrown3647]

Now I'm confused as bmw suggested 75w85 hypoid oil for rear differential

[@LA_Commander]

Yes that sounds about right

[@alphabeta123100]

Which differential oil is suitable for Toyota rav4 diesel automatic gear

[@LA_Commander]

Read your owner's manual

[@jaredogallo2813]

Great👍 information

[@Seto3993]

Very Informative

[@railroaded1991]

Never heard of a limited sleep differential what is that???

[@billybob1723]

jet lag

[@scottmonk5301]

What happens with a api gl4 and gl5

[@LA_Commander]

One is for synchronized manual transmission the other is for rear diff

[@brandon9715]

This video may be well intentioned but is inaccurate. Use what the manufacturer recommends. It’s as simple as that.