1965 Coronet 4 speed lubrication confusion

[67r/t4speeder]

I worked for Mopar dealers from '68-'72... Type A/B/Dexron was the factory fill.

Interesting

[67440Dodge]

definetely easier to find than GL-4 oil these days..

[67440Dodge]

Last time I bought Sta-Lube I had to drive 45 minutes to a Napa that actually had it in stock. one that was half hour away that showed it in stock called me when I ordered online and said the website was wrong, they were out and weren't ordering any more.

[Krooser]

If atf scares you use GM Syncromesh fluid...about a 50wt gear lube

[67r/t4speeder]

When I first purchased my Coronet, the shop that I used to flush and replace all fluids put Dextron 3 into the gearbox saying that was the required lubricant after research.  I am planning on taking the car on a fairly long trip soon and am uptight that it doesn't have 90w gear oil.  Should I be?  Thank you!

  Did you decide on which way to go? How did your trip go if you went yet?  
   I and others are interested.

[Krooser]

Just take note that GL5 does not play well with yellow metals like ssyncros... GL 4 is OK but I would still use atf.

Gear lube 7s designed to absorb shock loads that you don't see in constant mesh transmissions.