I looked up the Vin# and Cert# on my F-350 now I have some stupid questions.
My axle code was a 41 which according to the sheet is= 3.73 non-limited slip F-350.
I was trying to find out what type of oil to use in the rear end as I plan on changing it in the near future. I have read many posts about different weights and how much friction modifier to add and I am confused a little.
Now I am even more confused not being a mechanic what is the different between limited slip and non limited slip?
Also does this mean I dont need the friction modifier?
One reason I ask is my truck SUCKS
in the snow. My last pick up had an after market posi rear end, so maybe I am spoiled.
Here is an example the other day I had my truck parked next to the wife's Suburban in the drive way. It rained then snowed so it was very slick. My wife backed her Suburban with highway style tires out in 2wd.
My BIG BAD FORD TRUCK would not even move.
Not even budge just spin one tire. SO i turn it into 4wd still would not move. Then I remembered some saying that unless you lock in the hubs there is no 4wd in reverse.
SO I lock in the hubs and still have to rock back and forth to get the truck out of my relatively flat drive way
ALL THE TIME MY WIFE SITS IN HER 2WD VEHICLE WATCHING AND LAUGHING AT MY BIG BAD PIECE OF S__T TRUCK