Moly in a Manual Tranny

[Flimflam]

quote:

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Originally posted by Palma Pete:
Canadian Tire used to sell a green plastic bottle of Moly formulated for a manual transmission. Years ago I used this in all my cars (Volvos and Toyotas). The last time I bought it was five years ago for a Renault truck chassis used for a small Winnebago. So far as I know, it works. I found the shifting on an old A.H. Sprite improved noticeably......

I went to buy a bottle for my Suzuki Esteem and found it was no longer available. I see on this forum that moly is not recommended for a manual transmission because of the synchro cones.........

What moly is now made for transmission use and is there a manufacture's website with more info?

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I use Moly in the Redline MT-90 in my Suzuki Sidekick '98 manual trans and 4WD transfer case. I found Redline MT-90 by itself did not make for slick gearchanges. With Moly added (Shaeffer Moly E.P. additive), the gearchange is better and slicker than fresh off the dealer's lot in January 1999. In fact, I can now change gear without using the clutch.

I believe Moly does not harm a Manual transmission. Go to Shaeffer's website, they list a good Moly additive.

 

[MolaKule]

http://theoildrop.server101.com/ubb/ultimatebb.php?ubb=get_topic;f=16;t=001147#000000

The reason for the better shifting from the #132 was due to the base oil/carrier, not the Moly.

 

[Palma Pete]

Thanks MolaKule for your comments. I read the other link before posting. I hear what you are saying but wnat to know "why" it is not a good idea. Moly G said the opposite on their can. I realize theya re not exactly unbiased.

 

[MolaKule]

From the July 02 post:

quote:

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Because the MoS2 powdered moly will coat-up the synchro surfaces and embed itself in sintered metal parts. You do not want that to happen.

The MoDTC moly is what is used in egine oils and is completly oil soluble. While MoDTC is a friction modifier, it is not the kind of friction modifier you want in a car or light truck transmission.

There are other friction modifiers designed specifically for and work better better in manual transmissions.

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[Palma Pete]

Canadian Tire used to sell a green plastic bottle of Moly formulated for a manual transmission. Years ago I used this in all my cars (Volvos and Toyotas). The last time I bought it was five years ago for a Renault truck chassis used for a small Winnebago. So far as I know, it works. I found the shifting on an old A.H. Sprite improved noticeably.

I went to buy a bottle for my Suzuki Esteem and found it was no longer available. I see on this forum that moly is not recommended for a manual transmission because of the synchro cones. I recall that the Moly can had a FAQ on that very point and said it would not interfere with the synchro.

More explanation is welcome. I used it for 20 years with no perceived problems - although I do tend to manually synchronize when shifting in either direction.

What moly is now made for transmission use and is there a manufacture's website with more info?

 

[MolaKule]

The bottom line is:

Don't go puttin' junk in your transmission or engine unless you know the Chemical and Tribological implications!

 

[nicholas]

i personally have used,
the moly slip "e", in my transmission, this summer,
in a honda transmission case, i used, 10w30, and 15w40, with about 50mls, of the moly slips stuff....
you can get it at canadian tire,

and for so far, the transmission shifts like butter, no grind, no notching, smooth shifts at all rpm's....

i am not saying do it, i have tried it so far, because i rember using the moly slip for transmissions, about 5 years ago...... and it was good........, < the green can>

anyway , good luck, its your vehicle.

 

[widman]

Trnasmissions aren't like they used to be. Different materials, different grooves for clearing oil from the synchronizers, different metals, different angles of contact.
By the way, A.H. Sprites don't get old, they just get more experienced. I don't remember the exact design of the synchronizers on my 62 Bugeye, and my service manual is at my other house, but I'm sure it is different from what is out there today.