manual transmission fluid question

[Tekcd5]

Alright guys i plan on changing my oil and mtf( manual trans fluid) my question is it actually 10w-30/ 10w-40 motor oil

[Stoner51]

I use 10w-30 castrol. Some use Honda mtf.
My tranny has over 500,000mi and it shifts fine.
The choice is yours.

Steve

[reklipz]

Don't use motor oil. Honda doesn't even recommend that anymore, though one could claim this is for nefarious reasons (like Honda just wanting your money). That said, there is plenty of evidence, most of it anecdotal I suppose (I have some first hand, as do others here) that a specially formulated fluid (like MTF, or Synchromesh) performs better than [conventional] motor oil.

[cb7 calling]

I would use Honda mtf givin the choice. I had a civic tranny get stuck in 5th with motor oil in it. The exact cause of failure was never determined. I replaced it the same day and filled the next one with motor oil with no problem after that. My cb7 has had the same motor oil in it since the last clutch replacement, 100,000 miles or so, with no problems. That being said I would use Honda mtf I just never have it around.

[oyajicool]

Don't use motor oil. Honda doesn't even recommend that anymore, ,,,,,,,.

Does this apply to CB7s?
Or, later/current MT models?
Verify your source of information, please.

[hotrodj]

2 quarts of 10w-30 works just fine in all my hondas. Seems better quality oil shifts better than say, waltmart supertech

[Rammer Jammer]

would honda mtf be considered better than using sychromesh or something like that? i know this is gonna be opinionated but just curious what yall have to say.

[reklipz]

Does this apply to CB7s?
Or, later/current MT models?
Verify your source of information, please.

I tried looking for an official statement from Honda, like a TSB or such, but I couldn't find anything. The 20+ year old factory service manual states "10W-30" I believe. I could find TSBs saying to use Honda MTF in other vehicles and the like, but not specifically for our transmissions/chassis.

That said, I would be very, very surprised if you called up the dealer and asked them what kind of fluid you should use in your 4G Accord's manual transmission that they would tell you anything other than Honda MTF. I believe I could find some technical details with evidence showing that a specially formulated lubricant is better for any manual, synchronized transmission in general, but that onus is on you; I'm already convinced.

I agree with you though: I can't prove that Honda has officially stated this, which is what you asked for.

['93CB7Ex]

would honda mtf be considered better than using sychromesh or something like that? i know this is gonna be opinionated but just curious what yall have to say.

synchromesh is #1. then honda mtf. then gear oil then bootleg motor oil..

[coltonfrostcb7]

would royal purple be any good in a mt? I am just wondering.

[Warudakumi]

would royal purple be any good in a mt? I am just wondering.

Are you talking about just plain Royal Purple motor oil? Royal purple actually makes a tranny fluid as well.

http://royalpurpleconsumer.com/produ...mission-fluid/

I've used this on my car once upon a time when I was single and had money to blow on royal purple oil changes as well. It feels really good and my transmission noticeably shifted easier into gears......

[oyajicool]

I tried looking for an official statement from Honda, like a TSB or such, but I couldn't find anything. The 20+ year old factory service manual states "10W-30" I believe. I could find TSBs saying to use Honda MTF in other vehicles and the like, but not specifically for our transmissions/chassis.

That said, I would be very, very surprised if you called up the dealer and asked them what kind of fluid you should use in your 4G Accord's manual transmission that they would tell you anything other than Honda MTF. I believe I could find some technical details with evidence showing that a specially formulated lubricant is better for any manual, synchronized transmission in general, but that onus is on you; I'm already convinced.

I agree with you though: I can't prove that Honda has officially stated this, which is what you asked for.

Thank you.

[MustardCat]

The reason 10w30 is not recommended anymore is simple. In the last 20 years oil additives have changed greatly, the 10w30 you get today is not the same stuff that was around when Honda designed your transmission. Adding to this issue is the fact that every company has different additives, which is why some may work better than others.

Honda came out with their own MTF so they would have a consistent fluid to engineer transmissions around.

The general rule is this: Fill your trans with Honda MTF. If you still have grinding problems after that then you can start trying other stuff, but know that it's only really a band-aid solution.

[1slw4dr]

I just run Honda MTF. It's roughly $20 for 3 quarts and you will usually have a little extra left over for top offs if you might have a leak. Everyone swears by synchromesh but a while back I came across some threads where the long term effects of it on a trans weren't very good but who knows. I used to use regular motor oil until I came across some info much like what the other guy said about additives and such changing over the years so that's why I switched to just Honda MTF.

Also on a side note if you have a pop out or grinding issue 99.9999.....% of the time fluid isn't going to mean a damn thing. Parts are worn and/or broken and need replaced. Suck it up and do it or just deal with it.

[oyajicool]

Also on a side note if you have a pop out or grinding issue 9.9999.....% of the time fluid isn't going to mean a damn thing. Parts are worn and/or broken and need replaced. Suck it up and do it or just deal with it.

That's less than 10%.