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Old 02-26-2021, 03:00 PM   #1
ams
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Default M47 Fluid

Howdy everyone!

My 1989 245s M47 has started making a bit of a whine in neutral. I wanted to start by changing the fluid. The owners manual says to use type F ATF. Are we still thinking that is the best bet are there other fluids out there that would be better?

Thanks!

Andrew
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Old 02-26-2021, 03:43 PM   #2
dl242gt
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ATF type F is good. You can also use the Redline MTL which works well in my experience. Volvo also still sells their oil for these trannys.
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Old 02-27-2021, 02:46 AM   #3
c1800
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Originally Posted by dl242gt View Post
ATF type F is good. You can also use the Redline MTL which works well in my experience.
MTL quietened down my m41 significantly.
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Old 03-06-2021, 04:16 PM   #4
kittysgreyvolvo
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Post 75W80 GL4 gearbox fluid, Type F, Volvo PN 1161645, Throw Out Bearing ...

Hi Andrew,

I worry the whine in neutral. Certain it is a whine?

Year and miles?

May be the clutch works. More like a breathy grindy growly sound in neutral with full clutch pedal release.

Do you or a prior owner maintain a depressed clutch pedal like stop lights and RxR crossings? Wears out the throwout bearing fast and other bits. Use the pedal to engage into and release from a gear.

Have you adjusted the clutch cable? As the clutch wears, the clutch cable free play at the throwout arm gets used up maintain clutch cable tension and preventing full clutch engagement.

M47 will die in the presence of Dexron, Mercon, and and generic ATF. May last longer if synthetic. Yet don't use these fluids.

Ford "Type F" synthetic. I use the Amsoil Super Shift® Racing Transmission Fluid SAE 10W ARTQT-EA

https://www.amsoil.com/p/super-shift...d-sae-10w-art/



The specifications list Ford "Type F" compliance. Used in one.

Other uses Redline as other folks list here.

All work fine.

Volvo specified a fluid for M47 and other gear boxes. The part number may have been superseded. A Brickboard and Turbobricks board member vvpete mentions the fluid in multiple posts.
A post regarding the proper oil for your M47 II transmission fluid from vvpete, turbobricks and brickboard member:

http://www.brickboard.com/RWD/volvo/...unch_5spd.html

vvpete indicates the correct fluid for that Volvo M47 II transmission is Volvo part number 1161645.

https://www.tascaparts.com/oem-parts...sion-o-1161645

You can search for Volvo and 1161645 and find other vendors.

Depending on your year Volvo 240 with M47, one or both of the (fill / drain) plugs has a magnet. So clean both plugs of silver iron bits drawn from the circulating fluid.

Clean the cleaning the sealing surfaces of plug, washer, M47. Some will suggest the use of new crush washers under the sealing plug surfaces, discarding the factory or prior washer install.

https://www.amsoil.com/p/super-shift...d-sae-10w-art/

The Volvo 700/900 non-Turbo (normally aspired, not aspried!) used M47 also. So please read through this article, learn about the overfill method.

Also, know how to properly lift and settle the 240 unibody in jack stands using the jack points on a level surface unless you mean to use a repair service.

Copy and paste URL into new tab or window or click FAQ at the top of each brickboard page!

Transmission: Manual, Clutch
https://www.brickboard.com/FAQ/700-9...sionManual.htm

Questions?

Hope that halps!!!! Happy Caturday!!!!!








Quote:
Originally Posted by ams View Post
Howdy everyone!

My 1989 245s M47 has started making a bit of a whine in neutral. I wanted to start by changing the fluid. The owners manual says to use type F ATF. Are we still thinking that is the best bet are there other fluids out there that would be better?

Thanks!

Andrew
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I've owned only Volvo 240s since 1985.
RIP, yet beloved:
1975 244 DL (B20, M40)
1976 242 DL (B21, M46, Moonroof - an SRO?)
1979 245 DL (B21, M46)
1979 242 GT (B21, M46, Moonroof - an SRO? Grey Market from Holland)
Currently owned, beloved, operating, driven, if occasionally:
1990 240 (245) DL (B230, M47 II)
1991 240 (244) (B230, M47 II, Moonroof. Grey Market from Germany)
1992 240 (244) GL (B230, M47 II, L-jet 3.1, Moonroof)

Last edited by kittysgreyvolvo; 03-06-2021 at 04:21 PM.. Reason: Put an image in.
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Old 03-07-2021, 06:21 PM   #5
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Quote:
Originally Posted by ams View Post
Howdy everyone!

My 1989 245s M47 has started making a bit of a whine in neutral. I wanted to start by changing the fluid. The owners manual says to use type F ATF. Are we still thinking that is the best bet are there other fluids out there that would be better?

Thanks!

Andrew
I had the same thing in the very same car. When I checked, the fluid level in the m47
was about half what it should have been. I refilled it. The noise got worse over the next
year. Then the trans self destructed. It was the input shaft bearing. I found another m47
for $50 so opted not to rebuild the original. (375,000 miles)
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Old 03-07-2021, 07:14 PM   #6
ZVOLV
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I just got 2l of Valvoline Syncromesh MTL from the local store. It's all they had. I plan to dump it in my M90. Why not?
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Old 03-07-2021, 07:41 PM   #7
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I read on a BMW forum that Valvoline Synchromesh MTL has a thicker viscosity than Redline MTL, so you might be prone to stiffer shifting until the engine warms up?

Please report back as to how well it works, as I like Valvoline products.
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Old 03-08-2021, 01:16 AM   #8
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The original M47 fluid that was filled at the factory was a lifetime, synthetic, odourless and colourless fluid I've read here in the past.

It is no longer available
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Old 03-08-2021, 01:27 AM   #9
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Quote:
Originally Posted by dl242gt View Post
ATF type F is good. You can also use the Redline MTL which works well in my experience. Volvo also still sells their oil for these trannys.
I used to be on the same boat. No longer. D4 ATF with slight overfill.
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Old 03-15-2021, 12:35 PM   #10
ams
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Howdy all,
The noise has gotten worse. I am sure it is bearings but I am having a dickens of a time finding parts.
IPD didn't quite laugh.
drive line gear has it with or without syncros, no wait, just kidding; we can't get either.
FCP is proving to be more and more worthless as time goes on
Hopefully VP parts will get back to me.

Any other suggestions?

Thanks!

Andrew
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Old 03-15-2021, 01:27 PM   #11
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Find another M47 if fancy fluid doesn't help. Nobody that I know of overhauls these gearboxes and parts are NLA.

Ps, FCP sells parts that can be sold. It doesn't make sense to stock weird **** that takes decades to move off a shelf in the odd chance that an old Volvo nerd happens to need them. They are a business, not a public service provider.

If you don't want to take chances with a used M47 here are your other options:
1. Get an overhauled AW70
2. Swap a modern trans in it (a few Swedish shops sell cut and shut BMW diesel boxes with similar ratios, which would probably work best with what you have. Otherwise you could start a Tremec T5 swap project)
3. Dump the 245 and find a car that suits your needs and still has decent parts availability.

Good luck!
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Old 03-15-2021, 01:39 PM   #12
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Doesn't hiperfauto rebuild these boxes? I know they have advertised synchros forsale.
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Old 03-15-2021, 01:52 PM   #13
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Volvo discontinued the special bearings for the front of the lay shaft and rear of the main shaft. I should have enough of them to rebuild 2 more M47's along with synchros and the NLA caged needle bearings.

The last one I rebuilt needed the 5th gear slider & hub which took over a month to get from Sweden so take that into account. By the time it was done it cost the customer over $1600.

Used M47's are fairly easy to come by but most are in poor shape by now.
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Old 03-15-2021, 02:27 PM   #14
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My M90 shifts just fine with the Valvoline Syncromesh MTL.
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Old 03-15-2021, 04:30 PM   #15
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I remember reading an article from IPD, where they actually recommended using synthetic 10w30 motor oil to quiet down the m47.
https://www.ipdusa.com/techtips/1009...ansmission-Oil

Maybe it's worth a try?
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Old 03-16-2021, 12:32 PM   #16
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Does Volvo still offer m47 reman gearboxes?
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Old 03-16-2021, 02:25 PM   #17
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It doesn't say it's discontinued but you'd have to call and check availability to be sure.

https://www.tascaparts.com/oem-parts...IFJlc3VsdHM%3D
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Old 03-16-2021, 03:49 PM   #18
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Volvo of Vancouver Canada lists it as available for a 740. https://www.volvovancouverparts.ca/p...4/1208722.html

An exchange transmission that is.

Last edited by dl242gt; 03-16-2021 at 03:54 PM.. Reason: add comment
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Old 03-16-2021, 04:24 PM   #19
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That should actually be a new transmission. Rebuilt part numbers typically start with 500.
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Old 03-16-2021, 04:40 PM   #20
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Brand new would be worth every dollar. These are good transmissions even if they aren't the strongest.
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Old 03-16-2021, 04:48 PM   #21
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Maybe $1300 for that transmission from tasca isn't bad, considering I have no idea if my local transmission shop could find parts to rebuild a m47. Although, an used m47 is cheap enough...
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Old 03-18-2021, 12:47 PM   #22
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Does BAR'S LEAKS sell a Input shaft bearing FIX fluid?
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Old 03-18-2021, 02:32 PM   #23
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Quote:
Originally Posted by Jerd View Post
Does BAR'S LEAKS sell a Input shaft bearing FIX fluid?
I use this (not a snake oil, seems to help some):

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Old 03-18-2021, 02:38 PM   #24
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Quote:
Originally Posted by TheVo138 View Post
Maybe $1300 for that transmission from tasca isn't bad, considering I have no idea if my local transmission shop could find parts to rebuild a m47. Although, an used m47 is cheap enough...
1300 for a new trans is not bad at all.

If your car is NA and you don't abuse it will easily last 10-20 years.
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Old 03-19-2021, 02:12 PM   #25
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Originally Posted by blkaplan View Post
1300 for a new trans is not bad at all.

If your car is NA and you don't abuse it will easily last 10-20 years.
It's a no brainer if you can still get a trans from Volvo. That's a crazy good deal.
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