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Caterpillar 3208 Solutions This sub-forum is hosted by Mike Hohnstein who has been at this kind of thing for 50+ years now, guess I'm addicted. The saga has been all about progressively larger shop space since then. Honestly, never wanted to get into the CAT 3208's that were originally considered to be a throwaway engine but that's all that works in a FC in my world. Same thing with my Ford toter, that came with a NA, too much effort to hang in a 6, so been at it with the CAT V-8 for 20 years now. In reality you can get excellent life out of a CAT 3208 if it's built correctly. Post your questions about the CAT 3208 engines here and Mike will try to help you out.

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  #21  
Old 08-08-2019
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Steelwheels Steelwheels is offline
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I asked Bob Esswien at Precision Transmission about using motor oil over Transynd. He told me stick with Transynd. ZF makes a fluid also I can’t remember the name, it’s hard to find in the States.

You can always call ZF or Precision Transmission and ask what they think.

I know another 87-89FC 35 owner who did go with motor oil, I haven’t heard from him on how it’s working out.
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  #22  
Old 08-08-2019
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https://www.allisontransmission.com/...d.pdf?sfvrsn=2

https://www.allisontransmission.com/...b.pdf?sfvrsn=2

http://www.syntheticwarehouse.com/am...rque_drive.htm

My shop inventories the Amsoil product for our in house use.
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  #23  
Old 08-08-2019
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Quote:
Originally Posted by Steelwheels View Post
I asked Bob Esswien at Precision Transmission about using motor oil over Transynd. He told me stick with Transynd. ZF makes a fluid also I can’t remember the name, it’s hard to find in the States.

You can always call ZF or Precision Transmission and ask what they think.

I know another 87-89FC 35 owner who did go with motor oil, I haven’t heard from him on how it’s working out.
And when Precision rebuilt my ZF they filled it with Dino. Said there was no reason to use Transynd. They had it in stock by the way.

By the way, Bob was in NY City working on a crane when they rebuilt mine.
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Old 08-08-2019
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Amway. Oops I mean Amsoil is not an approved Allison oil. If it is not approved by Allison I would never use it in any transmission. Zf used to have a pdf document on tranny oil. They stated that if you use common ATF it must be changed every 24 months. Transynd was more or less forever.
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  #25  
Old 08-08-2019
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https://www.google.com/search?q=vest...hrome&ie=UTF-8

For the transynd zealots.
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  #26  
Old 08-08-2019
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Quote:
Originally Posted by Rick View Post
And when Precision rebuilt my ZF they filled it with Dino. Said there was no reason to use Transynd. They had it in stock by the way.

By the way, Bob was in NY City working on a crane when they rebuilt mine.
Why’d you have it rebuilt, what happened to it ?

How’d it run with Dino ?

Is the new owner on the WOG or did you get any feedback on the long term ?

I’m not stuck with any oil or fluid, I just want the longest service and best performance.

https://aftermarket.zf.com/remotemed...e-ml-14-en.pdf
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Last edited by Steelwheels; 08-08-2019 at 10:22 AM.
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  #27  
Old 08-08-2019
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I don't have a vested interest in any oil. My ZF came with Amsoil Torque Drive when I bought it and I have changed it twice now with Shell Spirax S6 A295 which is a Transynd of sorts. No regrets on the $600 that cost. It shifts better than with Amsoil but maybe that's because the fluid was several years old.

As far as motor oil in a ZF - I would never do it. That might make sense for transit fleets that operate in hot weather, stop and go.

Winnipeg has an illustrious bus history and is home to New Flyer and MCI (now the same company). I'm not sure what Winnipeg transit runs in their ZF and Allison fleet, but I know for sure they use water for the cooling system. When a bus stalls in cold weather the mechanics will come and cut the lower rad hose before towing it.

That's a good example how that might make sense for a city fleet but not for a bird. 15w40 might be the same thing. The ZF is an expensive transmission with a retarder that builds heat very quickly. I would rather use fluid that can handle the heat.
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  #28  
Old 08-08-2019
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One of the leading tranny shops in NA (Precision Transmission - Colmar, PA) recommends 15w-40 because of high temps most run. But when I was given the opportunity to change I elected to stay with Dextron since I usually ran in cooler weather. But if I ran in 100+ temps I see no reason why not run with 15w-40. If the ZF pros says it is a good thing it must be so. Bob Esswain a WOG member and a ZF mechanic in Colmar was factory trained by ZF and also has extensive knowledge on the configuration & wiring for Bluebird.
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  #29  
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The key to longevity is a good accurate trans oil temperature gage that is watched and heeded.
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  #30  
Old 08-08-2019
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The problem with Dexron is there is no sae standard for the oil. You really do not know what you are getting. Transynd was developed by Allison and Castrol. The engineer that developed the oil now has an oil testing lab. He sometimes posts on irv2.
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Last edited by Bruce; 08-08-2019 at 04:36 PM.
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