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View Full Version : WTF: Engine oil as Tranny oil!?!?


narcoleptic
20-12-2005, 03:17 PM
Went down to the dealer for some MTF manual tranny oil for my CD Accord.

They didn't have any in stock. The rep told me to use engine oil in place tranny oil. Is it true you can do that?

From my humble understanding:

Engine oil: 10w-30 <---honda oil
Tranny oil: 70w-80 <---Honda MTF

Any comments?
nedgeworth
20-12-2005, 03:18 PM
Tell him to get off his ass and order some in for you.
sifoo
20-12-2005, 03:49 PM
wtf? engine oil is brown and trannie is red ...

how can they be the same
egSi
20-12-2005, 03:53 PM
i have had this at honda before.

some wank gave me diff oil and told me it was tranny oil :thumbdwn:
SKREMN
20-12-2005, 04:15 PM
you can use it it will work have done it before
prbably want be the best for it
but i did it once and it stoped the crunch in the box it was in a city
SiR JDM
20-12-2005, 04:27 PM
Its common among other cars models to use it.. same as other cars auto tranny fluid is used in exchange for power steering fluid .. for hondas i personally wouldn't use anything than the specific fluid for your application. In particular power steering fluid.

Like the others said, tell the guy to get off his ass and order you some. If your really really desperate it is better than no fluid (of course).
barefootbonzai
20-12-2005, 04:46 PM
Tranny oil: 70w-80 is this rating for all honda's? Cause from my machanic's manual it say it's the same as the engine oil for 92-98 integra's. Type R wasn't listed, just said use honda recommended oil.
saxman
20-12-2005, 04:49 PM
go open up the honda factory service manual. I know at least for the civics, it lists 10w-30(maybe it was 10w-40... don't remember off hand) as the replacement fluid for the tranny fluid.

honda mtf fluid may work better, but normal oil works perfectly fine.
barefootbonzai
20-12-2005, 05:05 PM
I'm glad someone agrees.
bennjamin
20-12-2005, 05:13 PM
its either labelled ENGINE OIL or TRANSMISSION FLUID... use it for what the bottle says :)
EuroDude
20-12-2005, 08:23 PM
Ive always used normal engine oil (Mobil 1 synth) in my MT Tranny - and have had no problems. Gear changes are perfectly fine.

My Honda mechanic says its fine to do it, and does it to all Honda's he services.
ECU-MAN
20-12-2005, 11:34 PM
10 years ago Honda didnt have MTF. we put FEO in all MT boxes. no problems on normal boxes.

unleas your GB is rooted use an oil that best suits your BOX either MTF or FEO. be carfull what other oils you put in it.
barefootbonzai
20-12-2005, 11:39 PM
its either labelled ENGINE OIL or TRANSMISSION FLUID... use it for what the bottle says :)

And only service your car at honda....
narcoleptic
20-12-2005, 11:49 PM
I'm just reluctant to try out other brands particularly for the tranny, cos it already has 300K on the clock and has always used Honda MTF. I had no probs with it so far, no leaks.
bennjamin
21-12-2005, 08:14 AM
And only service your car at honda....

i have never serviced any of my hondas at honda (or any mechanic) in my life ;)
e240
21-12-2005, 08:28 AM
If any of you bothered to look at the owner's manual,
Honda actually recommends Engine Oil as the oil for B Series manual gearbox.

Of course Auto Boxes will have to use Auto Transmission oil.

So the technician is not wrong to use that oil.
e240
21-12-2005, 08:29 AM
wtf? engine oil is brown and trannie is red ...

how can they be the same

Holy ****s! The Royal Purple I use is ...PURPLE!
barefootbonzai
21-12-2005, 09:03 AM
If any of you bothered to look at the owner's manual,
Honda actually recommends Engine Oil as the oil for B Series manual gearbox.

Of course Auto Boxes will have to use Auto Transmission oil.

So the technician is not wrong to use that oil.

:thumbsup: That's the point that some of us where trying to make, but some are just too egnorant
spetz
21-12-2005, 12:47 PM
i have had this at honda before.

some wank gave me diff oil and told me it was tranny oil :thumbdwn:


Isn't it the same?
I mean, the oil you put into your transmission goes all around into the diff??
ECU-MAN
21-12-2005, 09:06 PM
yes, but RWD diff oil is like 80W90. not good for FWD Honda MT

just use MTF or FEO. cant go wrong
EuroDude
22-12-2005, 05:28 PM
And only service your car at honda....

:eek: My wallet hurts just thinking of doing that.


I do the easy->moderate stuff myself, and leave the rest to my trusty mech. I figured ive saved thousands doing this...
saxman
22-12-2005, 07:48 PM
I think he was being sarcastic...
HondaCivic
25-12-2005, 01:08 PM
My 86 civic actually uses 20w50 engine oil for the manual transmission! My user manual thing that came with the car, and the waynes workshop manual and very professional mechanics all say the same. 20w50 engine oil!

Ive done a manual trans oil change with it and its fine

I know a few other older cars that use the same grade oil in the box and the engine.

But yeah, newer cars oviously dont use the same oil.
SPEEDCORE
26-12-2005, 11:27 AM
i have had this at honda before.

some wank gave me diff oil and told me it was tranny oil :thumbdwn:

Hahahaha I remember that! So you did take it back and get them to actually give you tranny oil instead of gear oil like I pointed out to you?
tinkerbell
26-12-2005, 07:56 PM
Tranny oil: 70w-80 is this rating for all honda's? Cause from my machanic's manual it say it's the same as the engine oil for 92-98 integra's. Type R wasn't listed, just said use honda recommended oil.

engine oil and gear oil have DIFFERENT "sae" ratings,

but can be the SAME viscosity:

http://www.penrite.com.au/techbulletins/32ViscosityEquivalentsAttachment.pdf
Limbo
28-12-2005, 08:56 PM
Lighter oil can generally be used for gearboxes, but they usually use thicker oil so that it does not burn. I've heard from a honda mechanic that they usually use thinner oil in gear boxes with problems. He told me that generally he uses a fully syntheic oil in all his cars but only uses engine oil in gboxes with problems.

btw they colour gbox oil. I used the penrite gearbox oil and it is a yellow colour.

I have even heard of mixing some auto box oil with manual gbox oil to help with crunching also.

Personally i only use a fully synthetic oil in my gbox. Castrol syntrax or redline gearbox oil.