The other day I was given some advice from a mechanic who works at a Ford dealership in my area. Most of us probably know that the E40Ds don't have the greatest durabilty record...
He said that by removing the stock 5/16 " transmission lines and upgrading to a 3/8" line along with a trans cooler with 3/8" fittings, that it might help extend the life of the E40Ds.
My E40D already has 138,000 miles with a rebuild 3000 miles ago, might be too late for it, but...I'm going to give it a shot anyway.
He said that by removing the stock 5/16 " transmission lines and upgrading to a 3/8" line along with a trans cooler with 3/8" fittings, that it might help extend the life of the E40Ds.
My E40D already has 138,000 miles with a rebuild 3000 miles ago, might be too late for it, but...I'm going to give it a shot anyway.