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What is everyone using in their 4 speed trans?
I've heard you can use automatic transmission fluid.
CRC Sta-Lube API/GL-4 Multi-Purpose Gear Oil 85W90, 1 Gal | eBay
Sta-lube gl4 85-90 in mine.
Sta-lube gl4 85-90 in mine as well. NAPA carries it here in Florida. Wayne has it at Brewers Performance as well.
You can buy Sta-lube at NAPA too.
Motor oil does work nice.
Sta-Lube GL-4 here as well, supplied by Brewer's Performance - Mopar A833 4-Speed Transmission and Component Specialists
Like many, stalube _ your Napa will have it
Only in very cold climates.
Thank all, I was going to Napa today, just add Sta-Lube to my list
Great. Make sure it's GL-4, not GL-5. Lots of stories online about adverse results with GL-5 and our transmissions...
And its GL-4 https://www.pennzoil.com/en_us/prod...ls/synchromesh-manual-transmission-fluid.html
Most of my 4-speed experience is with Muncie's and Toploaders and I've just recently acquired an 833 in a car - but I'm always amazed at reports of running motor oil in one of these old 4-speeds. It takes a lot of effort and care to re-seal one of those old transmissions to where it will hold in 85-90 gear oil. Motor oil in an old aluminum Muncie with a worn countershaft bore would probably be nearly dry of oil in a day or two. And my Toploader I've rebuilt/resealed a couple of times and it still has an occasional drip. I guess if you can get an 833 sealed up good and tight then go for it. Another vote for GL4 Sta-Lube from NAPA.
Not a big Pennz fan but this stuff does work well.
Basic 80/90 from anywhere.
I had a little gear clash when cold from 1st to 2nd. Sta-Lube did nothing, but the Penzoil Synchomesh worked like a charm. Shifts like butter now.