The Ford Barn - View Single Post - 3 speed column shift grinding in 3rd-Help!

Flatout · 09-12-2018, 05:12 AM

What gear oil are you using? Some oils specifically state in small print on the back "not for use in synchromesh transmissions"
Use GL-1 in your transmission. NAPA carries it. It's straight 90 wt.
I just drained the GL-5 out of my transmission and refilled it with GL-1. I can notice all ready that the synchros are shifting smoother. .

09-12-2018, 05:12 AM	#7
Flatout Senior Member Join Date: May 2010 Location: Damascus Oregon Posts: 160	Re: 3 speed column shift grinding in 3rd-Help! What gear oil are you using? Some oils specifically state in small print on the back "not for use in synchromesh transmissions" Use GL-1 in your transmission. NAPA carries it. It's straight 90 wt. I just drained the GL-5 out of my transmission and refilled it with GL-1. I can notice all ready that the synchros are shifting smoother. .