Perhaps ask the guys who did the reconditioning.
Quote:
Originally Posted by
gasman
So now I am in a dilemma. Do I spend $700 on an auto service or do I spend $2200 on reconditioning the TC as they will have replace the oil in either instance? (my box was re'coed 50k ago).
Thanks
I wondered if you know which shop did the reconditioning? If so, and if they would talk to you, perhaps they would answer that question for you.
It could be that they remember the tranny, particularly if it was not so good. It all comes down to trust and luck. My guys when they changed the pan filter etc said based on what they found stuck on the pan magnets that the tranny was still OK but there was a bit more metal on the magnets than they would have liked to see for 126,000 km.
Tranny rebuilds, like engine rebuilds, come down to a question of the parts you leave in and what you replace. Often that is decided by who is paying, not the guys doing the fixing. Me, in the absence of anything else, I would probably do another oil change, but make certain that the official Land Rover oil was used. The tranny will then either get better or get worse.
The way to "quick fix" a tranny that is slipping is to add find metal powder to the oil - that reduces slip for awhile - at least until you are far away from the shop; hence new clean oil of the correct type will either solve the problem as it washes out stuff, (glazing), causing the problems or the problem becomes worse because the oil is attempting to do what it is supposed to do, and the parts are such that the oil cannot do its job of transmitting torque.
Fine metal powder "fixes" the client, not the tranny.
Quote:
Originally Posted by
ADMIRAL
Hey what!! Most transmission manufacturers have quite sophisticated filtering systems to eliminate foreign material, particularly metal, from the fluid. I cannot see this being good for any transmission IMO.
You are correct, metal filings are bad for the transmission and that is one reason that ZF has put two magnets in the bottom of the plastic oil pan. I was surprised as to how many metal slivers and how much metal paste was clinging to the magnets when the plastic filter / pan combo was replaced in my ZF. The magnets were doing their job and provided an indication of the degree of operational wear within the transmission.
As to purposely pouring metal filings in with the transmission oil, well this is equivalent to packing a rear differential with sawdust. The sawdust quiets the gears down for a time, long enough for a difficult client to depart; the metal filings increase the viscosity of the transmission oil such that the client can also depart. These "fixes" normally are a result of the vehicle owner blaming the shop for the mechanical problems.
In the case of a transmission, often it is the dirty oil that has kept the vehicle at least mobile. In this case, the result of an oil change is that the vehicle cannot even back off the hoist. An unreasonable owner then blames the shop, insists the tranny was OK when the vehicle drove onto the hoist, claims the shop wrecked it so they better fix it - they do.:o
