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Kirkham Motorsports

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  #1 (permalink)  
Old 03-06-2009, 03:49 PM
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Default TKO 600 Tranny Fluid

With about 500 miles on my tranny, I'm planning on changing the fluid this weekend. Thought I'd call Tremac to see if there's any update on their prefered fluid and if they like any of the synthetic blends, like Dexron IV or VI. The instructions with my tranny said to fill it with GM Synchromesh or Dexron III ATF. Got kind of an interesting response that I thought I'd share.
First, they tested and don't like the synthetic blends. Said they are too thin.
Two, they are now recommending Pennzoil Synchromesh over the GM and Dexron III fuilds. They like the thicker viscosity of the Pennzoil.
Three, they said that although the owner's manual for Corvettes say the tranny runs Dexron VI and Ford manuals say Dexron IV, they really have Dexron III in them since Tremac pre-fills them.
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Old 03-06-2009, 04:18 PM
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Default Trans Oil

Matt,

I really didn't care for the GM Sychromesh, so I went with Amsoil Sychromesh. I like this much better. Don from DD Performance told me not to use any type of ATF. The TKO's seem to shift better since I have used Amsoil Synch. Then again it just my opinion.

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Old 03-06-2009, 06:11 PM
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What about this stuff?

http://performanceunlimited.com/cobr...ltrashift.html

I used it in SPF 1380, and it seemed to help the shifting.

E
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Old 03-07-2009, 04:06 PM
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Ditto on the UltraShift - I use it in my Daytona and it is the best!!!
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Old 03-16-2009, 12:12 PM
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Mobil 1 atf.
Morris likes this.
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Old 05-31-2018, 10:57 AM
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Quote:
Originally Posted by MFE III View Post
With about 500 miles on my tranny, I'm planning on changing the fluid this weekend. Thought I'd call Tremac to see if there's any update on their prefered fluid and if they like any of the synthetic blends, like Dexron IV or VI. The instructions with my tranny said to fill it with GM Synchromesh or Dexron III ATF. Got kind of an interesting response that I thought I'd share.
First, they tested and don't like the synthetic blends. Said they are too thin.
Two, they are now recommending Pennzoil Synchromesh over the GM and Dexron III fuilds.
Was that Pennzoil Synchromesh MTF or ATF?
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Old 05-31-2018, 11:03 AM
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Are you racing? If not, I think the TKO fluid is meant to not require changing.
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Old 05-31-2018, 11:47 AM
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Quote:
Originally Posted by 66gtk View Post
Are you racing? If not, I think the TKO fluid is meant to not require changing.
If you're not racing, or ragging it out somehow, you might change it once in your lifetime... if that. But what's kinda interesting is that Tremec used to specify the GM #12345349 for its fluid. Now they specify GM #88861800. Tremec Lube FAQs I dunno, maybe GM just changed the numbers and it's the same stuff, but you can still buy either one from Summit.
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Old 05-31-2018, 05:55 PM
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Mobil 1 Synthetic ATF...(it’s a Dex III)..we’ve had many discussions also with Liberty.....
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Old 06-02-2018, 02:53 PM
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x2 on Amsoil Sychromesh!!
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Old 06-02-2018, 07:24 PM
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old thread but

several of us have been using Pennzoil because is 1/3 the cost and ease to find.
I found this online:

Pennzoil® Synchromesh Fluid is designed to offer optimal protection for moderately loaded gears in manual transmissions. Containing a high detergent additive system, it helps cope with water, dust, dirt, and any other small deposits you might encounter on or off-road1. Pennzoil® Synchromesh Fluid also offers synchronizer compatibility for performance in manual transmissions, specifically to fulfill the needs of Chrysler, GM, Honda and other transmission requirements.
Pennzoil® Synchromesh Fluid meets General Motors specification 9985648 for use where GM part numbers 12345349 or 12345577 are called out for use. Chrysler manual transmission fluid specification MS-9224 is also met. This high quality manual transmission fluid is formulated for good low temperature flow to maintain shift characteristics even after a cold night2. Corrosion protection is added to help protect your transmission.
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Old 06-08-2018, 09:35 AM
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I called Tremec a few weeks ago and they told me to buy the Pennzoil.
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Old 06-08-2018, 05:54 PM
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I just bought a new TKO, is there any type of break-in-period, with shifting, fluid etc..?

I don't have my trans at home to read the manual.
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Old 06-08-2018, 07:04 PM
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Quote:
Originally Posted by FUNFER2 View Post
I just bought a new TKO, is there any type of break-in-period, with shifting, fluid etc..?

I don't have my trans at home to read the manual.
A 500-mile break-in period will prevent premature wear and possible damage to the transmission. During the break-in period, you must avoid high RPM shifts and drag starts. The clutch must be fully disengaged to shift the transmission. Do not use excessive force when shifting the transmission. If you experience clash shifts (grinding), check the travel of the clutch to ensure proper air-gap is achieved (see above). Another possible cause of clash shifting is improper transmission installation, (excessive driveline angle / resulting in poor driveline alignment). Do not attempt to shift the transmission when the engine is revving over 6,500 RPM’s. Do not hold the transmission in gear by applying force on the shifter. This will damage the pads on the shift forks and may result in significant damage to the transmission.

From the TKO Installation Tips that come with your transmission: http://libertysgears.com/wp-content/...ation-Tips.pdf
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Old 06-08-2018, 08:14 PM
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I pretty much drive the same, as you don't have to treat and beat a tranny to death, even if racing. Same thing with engines. (and my wife)

I've never used a mic to run in the bellhousing for dead on line up of the fly, disk, bell and trans, with no issues in the past, but I'm going to with this new drivetrain. A friend has a magnetic dial indicator, so it'll be interesting. I need to order a throwout and pilot bearing.

Do you know where I can buy a bell to fork boot ?
I have a new Quicktime.
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Old 06-08-2018, 08:20 PM
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Quote:
Originally Posted by FUNFER2 View Post

Do you know where I can buy a bell to fork boot ?
I have a new Quicktime.
If blykins is still talking to you, you might try him. If not, try Mike Forte Fortes Part's Connection | Quality high performance parts at the most competitive price Personally, I think TKOs are more sensitive to having the bellhousing dialed in as close to perfect as you can get. QTs are far better than Lakewoods on that, but try and get it as close to perfect as you can.
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Old 06-09-2018, 05:31 AM
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This is what I use and it's made a world of difference in shifting.

Cobra Valley's Chemicals - Ultra-Shift Transmission Lubricant
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Old 06-09-2018, 10:55 AM
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I broke my TKO 600 in with ATF and at 500 miles I changed the fluid no metals shavings. I refilled with ATF (Dexron) and added 2-3 ounces of Lucas Oil and 5000 miles later the tranny shifts great . It quick shifts fine too. And, I don't baby the car either.

I did have major clutch issues and shift problems until I bought a Quiktime Bellhousing and got rid of the Lakewood boat anchor . I have Forte's hydraulic cylinder and my clutch/shift issues went away .
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Old 06-09-2018, 02:53 PM
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It took 5,000 miles ?

Why are some people using ATF ?

What were the problems with the Lakewood ?
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Old 06-09-2018, 02:59 PM
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Is Ultra-shift made by Eaton ?

We know that when you break in a new engine, you don't want to use synthetic oil, use regular oil until the rings set.
Ultra-Shift is synthetic, so you don't need to do the same with a transmission ? (Mine is a TKO-600)
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Last edited by FUNFER2; 06-09-2018 at 03:23 PM..
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