Dana 300 sight tube

[Ron84cj]

I asked this over on my build thread but I figured it might get more traffic here. There seems to be some debate online about how much to put in when clocked. I know in the factory position the Dana 300 gets about 1.75 quarts ish. When clocked some people say the same 1.75, or 2 quarts, some say 2.5 - 3 quarts so the bearings always see oil at low speeds. For those of you who installed a sight tube, can you please confirm this once and for all?

 

[walkerhoundvm]

Until it starts coming out has always been a good metric for me.

 

[Ron84cj]

Until it starts coming out has always been a good metric for me.

My T case is clocked flat so the fill hole is no longer in the factory location. If I filled it up to the plug it would overfill the crap out of it. I'm curious what people with sight tubes have found. I know there are a few on here I just don't remember who.

 

[walkerhoundvm]

Mine is also clocked more or less flat. Still filled to overflow, though it did make changing a rear output shaft seal a little more messy than typical.

 

[John N]

I’m clocked halfway up between stock and flat. I read somewhere, long ago, to use 2 quarts in any position. I have done that for years with no issues. I’ve always used basic 80w90 Gear lube.

 

[jbeemer]

I’m clocked halfway up between stock and flat. I read somewhere, long ago, to use 2 quarts in any position. I have done that for years with no issues. I’ve always used basic 80w90 Gear lube.

This is what I've always done......