Re: WHICH TRANSMISSION FLUID FOR ULTRAMATIC
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Forum Ambassador
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G'day Rich(asapacker),
![]() There's this FAQ, ULTRAMATIC: What Fluid to Use, which should assist you. And, I invite you to include your '50 Custom Eight and '56 Four Hundred in the Packard Owner's Registry here on PackardInfo!
Posted on: 2013/2/20 3:14
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Mal
/o[]o\ ==== ![]() Bowral, Southern Highlands of NSW, Australia "Out of chaos comes order" - Nietzsche. 1938 Eight Touring Sedan - SOLD 1941 One-Twenty Club Coupe - SOLD 1948 Super Eight Limo, chassis RHD - SOLD 1950 Eight Touring Sedan - SOLD What's this? ![]() Put your Packard in the Packard Vehicle Registry! Here's how! Any questions - PM or email me at ozstatman@gmail.com |
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Re: WHICH TRANSMISSION FLUID FOR ULTRAMATIC
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Home away from home
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Most ultramatic owners use Type F.My car sat in a garage for 10 years (56 Patrician) so I am using B&M trickshift.B&M is a variant of type F but with more friction properties.
Posted on: 2013/2/20 6:41
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Re: WHICH TRANSMISSION FLUID FOR ULTRAMATIC
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Home away from home
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Dear asa:
Type F has no friction modifiers and is fine for the 23rd series car. For the 56, Packard recommended the friction modifier - read Dexron - in a TSB. Given that D range utilizes a synchronous shift the modifier will help reduce direct clutch wear. However, if you only use High range it doesn't matter.
Posted on: 2013/2/20 9:40
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Re: WHICH TRANSMISSION FLUID FOR ULTRAMATIC
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Forum Ambassador
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Quote:
For the 56, Packard recommended the friction modifier - read Dexron - in a TSB. Not exactly. We've been down this road before: https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?topic_id=8045&forum=4&post_id=86686#forumpost86686 Dexron is backwardly-compatible to what Packard recommended in their service newsletter. However, while subsequent formulations MAY also be backwardly-compatible, up through Dexron III, they do not have the same friction modifiers as the original Dexron fluid. The fruits of that discussion were incorporated into a revision of the FAQ cited above.
Posted on: 2013/2/20 10:19
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