can we use Engine Oil 10W40 in a Manual Transmission?

[saqi44]

i need some help, Honda MTF is not available here,,a Honda Expert here told me to put 10w40 Engine Oil Castrol in my Manual Transmission,,,, shud i do that?caz i will be driving my car around 4000Km in the next two days, and my transmission is hard to shift the first and second gear,and grinding sound is there while releasing the clutch,,,what shud i do please?

[Tippey764]

On the back of the owners manual it was 10w 30 motor oil

[saqi44]

so that means that we can Put Castrol 10w40 Engine oil in the MANUAL TRANMISSION of my car?and no harm will be done?

[HATCHing]

so that means that we can Put Castrol 10w40 Engine oil in the MANUAL TRANMISSION of my car?and no harm will be done?

Wont know for sure... but if you would like to find out then do it anyway.
I recommend OEM Honda Manual transmission Fluid but if I have to use one I would use the 10W30 before 10W40.

[saqi44]

i m just confused with only one thing, ENGINE OIL? the oil which we use in engine can b used in our transmissions??? i need to change the oil,,so that means i can put Castrol Engine Oil 10w30 in my transmission?

[I<3MyHonda]

He's only asking because mtf isn't available. You can get mtf by all means get it

[Tippey764]

I put 10W 30 in my transmission, it worked perfectly fine and for the duration i owned that car in working order no harm was done

some members here will also tell you to try GM syncromesh but i have not personally used it.

[C91BLX7]

Drove around with 5w-30 for a few days till I could get some MTF. No problems.

[YK86]

Engine oil is fine in the 5 speed transmissions. Check your owners manual (or download the factory manual) and use the recommended weight for your region's climate (especially since you live in Saudi Arabia so it's kind of hard to reccomend the right oil).

[HATCHing]

i m just confused with only one thing, ENGINE OIL? the oil which we use in engine can b used in our transmissions??? i need to change the oil,,so that means i can put Castrol Engine Oil 10w30 in my transmission?

Engine oil is okay my friend!! yes 10W30 work okay in a Honda transmission.
But if you can get the Honda MTF fluid it work better.

[sikz6]

I put 10W 30 in my transmission, it worked perfectly fine and for the duration i owned that car in working order no harm was done

some members here will also tell you to try GM syncromesh but i have not personally used it.

same here, no problems either.

op, i'd definitely stick with 10w30 though

[deevergote]

I have experienced grinding with motor oil, which went away when I used GM Synchromesh (similar reports have been made about the new Honda Synthetic MTF.... but I haven't tried that myself.)

[saqi44]

so nice of you all ,, i went to the dealership of Honda in the morning when i was on my way to my workshop, they said that Motor oil would do perfectly fine, and MANUAL GEAR TRANSMISSION oil 90W120 is not recommended for Hondas, so he told me to flush the gear with 10W40 and to refill it again ,,,, thats what i did, the car is smooth but the shifting still makes the noise, i guess the fork inside is not good,,, just will b leaving in an hour and will drive 4000 till tomorrow,,,see what happens,,, thanx all,,,i was confused till morning but now that i have read ur expertise,,,all is well

[dejan225]

Glad to see solved that.
I'm using Mobil 10W-40 last 10000km and it works perfect so don't worry.
This is HONDA!

[cd5brickcity]

Its recommended that you use 10w-30 motor oil and i was told to mix it with a lil bit of gear oil to increase thickness of the weight cause just motor oil alone is to thin.