Re: WHICH TRANSMISSION FLUID FOR ULTRAMATIC

Posted by BH On 2013/2/20 10:19:33

Quote:
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.