Class C Trailer Towing Capacity
I know there are a ton of discussions on this but i searched the sticky thread on towing and all the info. was from 2004. Please feel free to direct me to other threads if needed. I would love to he...
Forum Discussion
carringb wrote:
...Some pre-2003 E450s did get the 11.25" ring and pinion...if the axle code = 4.63 instead of 4.56, it has the 11.25" gears.
Recently went through the "look the axle up" routine for ours, and found 4.56, so we aren't one of the winners of the "4.63 lottery."
Reason for the looking up, was to determine the original lubricant, the appropriate replacement lubricant, and axle capacity/how much to buy. Outcome was to switch from OEM Dyno Oil to Full Synthetic 75W-140.
Pretty sure Bryan runs a lube something like that, but seeing 250* (albeit under extreme conditions!) I wonder... Would a Finned Aluminum Cover help? Maybe with a Fan blowing onto it? I think I heard of a diesel pickup that used a couple fans on the differential cover.
