What kind and how much rear differential fluid

[nick455440]

What kind and how much rear differential fluid in a early a 7.25? Thanks

 

[Woods74]

80-90w conventional. Fill it up till it pours out of the fill plug as car is level. 2 2-1/2 quarts sounds about right.

 

[Bad Sport]

Unlikely, but if it's a suregrip (they did make them) be sure to put the friction modifier in it.

The Ferd stuff works well in them.

 

[mderoy340]

Since you are in FL I would use 85W140, Walmart sells it in their brand in qts or gals. The more it stinks the better it is IMO.

 

[rednesss]

I just rebuilt my 489 case suregrip, Cas aka Dr. Diff sent me a bottle of GM friction modifier. That stuff smelled worse that a turd covered in burnt hair. My God it stunk up the shop for 5 days. Nasty, nasty stuff.

And the 8 3/4 suregrips take about 2 quarts. The 7.25 I doubt takes anywhere near that.

 

[TrailBeast]

Not quite 1.5 quarts on the 7.25

 

[Woods74]

That stuff smelled worse that a turd covered in burnt hair. My God it stunk up the shop for 5 days. Nasty, nasty stuff.

It smells like bigfoot's d*ck!

 

[nick455440]

Thanks guys,

 

[TrailBeast]

I just rebuilt my 489 case suregrip, Cas aka Dr. Diff sent me a bottle of GM friction modifier. That stuff smelled worse that a turd covered in burnt hair. My God it stunk up the shop for 5 days. Nasty, nasty stuff.

And the 8 3/4 suregrips take about 2 quarts. The 7.25 I doubt takes anywhere near that.

If you would have ever smelled Mexican gear oil you would have been immune.

Imagine the nastiest, smelliest sweatiest, stinky SOB you ever met and then imagine sticking your nose in his arm pit for a big ol whiff.

That's about how it smells, and it sticks around for days like you said.