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Underbody braces, turbos and more!

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 Post subject: trans oil.
PostPosted: Thu Apr 03, 2014 10:11 pm 
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Joined: Thu Feb 22, 2007 10:51 pm
Posts: 153
Location: boise id
Ok so with 252xxx miles and my sprint being 27 years old I am figuring the trans fluid probably could be changed. My question is what fluid is supposed to be in the 87 sprint turbo man. Trans? The local parts house guys couldnt figure it out. Thanks in advance.


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 Post subject: Re: trans oil.
PostPosted: Thu Apr 03, 2014 10:35 pm 
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Joined: Thu Jul 20, 2006 7:17 pm
Posts: 1403
Location: Alberta, Canada
I use gm synchromesh or equivalent competitors brand syncromesh fluid. It seems to work well, it won't fix a broken transmission, but I have had it eliminate minor grinding on high mileage transmissions. It's good stuff, apparently has just the right amount of slip to help synchros do their job effectively.
That said, I fixed up maybe 100-200 mk1's years ago when they were plentiful and always changed trans fluid before I sold them, it was always a mystery what would come out when you pulled the plug! I remember motor oil, ATF, 80/90 gear oil and 75/90 coming out depending on who had worked on them last. Each trans with these various oils seemed to work fine. Go figure.

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1995 Swift w/16V 4.39s, 3tech cam, Esteem t-body, Header, needs more.
1995 Gt Mustang "Boss Shinoda" package.
1999 F150 4x4 Supercharged
1967 Mustang 428 auto, never ending expensive project
1993 Civic si h22a, fell in my lap, couldn't resist!


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 Post subject: Re: trans oil.
PostPosted: Thu Apr 03, 2014 10:43 pm 
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Joined: Thu Feb 22, 2007 10:51 pm
Posts: 153
Location: boise id
Thanks. Being as high mileage as it is I'll probably go with the syncro mesh.


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 Post subject: Re: trans oil.
PostPosted: Fri Apr 04, 2014 1:15 am 
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Joined: Sun Feb 23, 2003 4:16 am
Posts: 8033
Location: Ontario, Canada
Bob, synchro works great, but a quality ATF, or synthetic motor oil from 5/30 to 15/40 or 20/50 will do the job too.

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 Post subject: Re: trans oil.
PostPosted: Fri Apr 04, 2014 8:14 am 
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Joined: Thu Feb 22, 2007 10:51 pm
Posts: 153
Location: boise id
Thanks mike. My boss is an amsoil dealer so I'll get some oil from him. Also gonna be ordering a cam fairly soon. And getting a ss turbo manifold built for it as well.


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 Post subject: Re: trans oil.
PostPosted: Fri Apr 04, 2014 12:01 pm 
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Joined: Sun Feb 23, 2003 4:16 am
Posts: 8033
Location: Ontario, Canada
Amsoil has a synchromesh equivalent. I would use that.

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 Post subject: Re: trans oil.
PostPosted: Sat Apr 05, 2014 8:41 pm 
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Joined: Tue Feb 13, 2007 10:28 pm
Posts: 1170
Location: So Cal, USA
Mobil 1 5w/30 works great.
It will tend to seep out if your seals have shrunk over the years.
Some dinosaur oil 5w/30 can help recondition seals and works
fine too. I've used 5w/30 from the 1st change on and swap the
fluid about every 3-4 oil changes and I have 700,000 miles on the
tranny, never had to crack it open.

I have a new project I'm going to try synchromesh on my
rebuilt tranny with an LSD.
Swepco Synchromesh. You can find it on Ebay.
http://www.swepcolube.com/products/swep ... sion-fluid


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 Post subject: Re: trans oil.
PostPosted: Sun Apr 06, 2014 11:37 pm 
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Joined: Thu Feb 22, 2007 10:51 pm
Posts: 153
Location: boise id
Went with the gm synchromesh cause it was readily available. Shifts so much smoother and got better mpg through the first tank. Thanks for the info all.


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