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winkle133



Joined: 01 Aug 2006
Posts: 6


1969 Firebird

PostPosted: Tue Jul 12, 2011 2:04 pm    Post subject: Automatic transmission fluid Reply with quote

I'm going to be replacing my leaking convertible top lift cylinders soo on my 69 Firebird. The GM repair manual calls for Type A auto tranny fluid but I can't find it anywhere. Does anyone know if there is a current substitute for Type A that won't screw up my top pump or the cylinders?
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Larry
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Joined: 01 Jun 2006
Posts: 4768




PostPosted: Tue Jul 12, 2011 3:53 pm    Post subject: Hydraulic Fluid Reply with quote

I just read a similar question in another source that mentioned in 1961 Ford superceded Type A fluid with Type F. That isn't much help though as Type F is hard to find too.

This was all in reference to power steering, but still related. They suggested just using a "modern" power steering fluid, but being sure to completely flush out the entire system of the old fluid.

Mostly all hydraulic systems just need a good quality light weight fluid. Most variations usually only had to do with addatives and such. The only real dangers are if the additives are too srtong for the durameter of the rubber used in a system's seals. But generally in any automotive application there was little harm in using any of the fluids.

I knew a Pontiac nut (a REAL NUT!) who never used Dextron or any GM fluids in his transmissions. He used Type F Ford fluid because he said it kept the transmission cleaner.

If you have any questions, check with a local hydraulic shop and have them recommend a fluid that they would consider "mild" and easy on seals. Some people recomment brake fluid, but it attracts water (moisture) and also if it leaks or you spill... kiss your paint goodbye.

Just don't do what a friend did in the Air Force and put jet engine oil in anything. He put it in his car and ripped out all the seals... but it was sure clean inside when we took it apart.

Bottom line, I would go with power stering fluid or a hydraulic shop recommendation of a very not detergent fluid (to protect your seals). But be sure to first flush the system to be extra sure and cycle the top a good number of times to clear out any air; then refill.

If you still have questions, perhaps these two places shown below can make a suggestion (or provide fluid):

Convertible Service
5126-M Walnut Grove Ave.
San Gabriel, CA 91776
800-333-1140 (order hotline)
818-285-2255 (information)
8:30 a.m. - 5 p.m. Mon-Fri Convertible top mechanism parts; 6 & 12 volt pump motors, hydraulic lift cylinders, hydraulic window and seat cylinders, hose assemblies, top latches, relays, switches, folding frame parts, folding top weather-stripping kits. Send $1 for latest parts catalog.

Hydro-E-Lectric
Attn. Paul Wiesman
48 Appleton Road
Aubum, MA 01501
617-832-3081
9:00 am. - 6 p.m. Convertible top and power window parts, motor pumps, cylinders, motors and hoses. Send SASE for list Call to place Mastercard, VISA or C.O.D. orders.

I have delt with Hydro E-Lectric before and find them to be very helpful.

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winkle133



Joined: 01 Aug 2006
Posts: 6


1969 Firebird

PostPosted: Wed Jul 20, 2011 4:46 pm    Post subject: Auto transmissiojn fluid Reply with quote

Thanks for the help. As it turns out I found an AT fluid at my local O-Reilly Auto PArts store that according to the bottle is a replacement for type A as well as other AT fluids. it's labled a stheir brand Premium Auotmatic Transmission Fluid.
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Larry
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PostPosted: Thu Jul 21, 2011 6:04 am    Post subject: Hydraulic Fluid Reply with quote

Thank's for the info. Sounds like you found the perfect stuff.
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