Re: Transmission flush

Posted by RN on May 22, 2013 at 09:32:08 from (205.213.104.118):

In Reply to: Transmission flush posted by Bill Radford on May 22, 2013 at 05:40:00:

Longest life is doing the recommended service- fluid/filter change at whatever mileage, 20,000 to 40,000 miles. BUT, we all know most transmissions in use by non-commercial driving public are lucky to get a 25,000 dealer service for warranty and don"t get "serviced" after that until slipping, fail to shift, or the fluid check shows black and burned. Commercial users like some of the rental companies have drain plugs in the transmission pans- every other engine oil change the tranny fluid gets drained also-this gets about 1/2 the old fluid out at least- and fresh fluid added to fill is done at 1/3 the long service interval, 10,000 miles instad of 30,000. X Hertz F250 van made into light tow truck had this type pan, my old Kaiser DJ5 X postal also had pan drain plug and postal shop worker confirmed that the tranny pan drain was regular service, the "surlpus" DJs had maintenance logs and when checked showed the engine and tranny drain mileage- the rear ends also had changed oil logged. Ford Crown Vics and now Taurus option has the drain plug in tranny pan available if ordered by public- this was one of the parts of police/commercial package for designated fleet sales -like rentals in Texas- for many years. Other part of commercial package for the trucks/vans- a external added oil filter in coolant line, same 10 micron with a clog bypass as engine got on van with clearance, the small filter is supposed to be on the Taurus commercial. GM powerglides in early commercial use also had the drain plug- part of the commercial package in 1970s for delivery vans used in Chicago and the cabs with Chevy engines I drove then. Tow package catalog from a conversion outfit/tranny rebuilder has the pans with plugs added, plug kits to put in your own, and the external oil filters for aftermarket/
upgrade use-- local Ford dealer has the catalog and will do a quick upgrade on used vehicle that customer wants to do a boat tow or commercial haul, delivery with what was a standrd package vehicle- a Ford gets done on day of scheduled service or delivery, a other market vehicle takes 3 days to schedule to make sure the parts are there from order- Ford kits is a couple on the shelf already. The Ford minvans getting abused sometimes get this upgrade on tranny change, the new little Transit high roof model is supposed to come from factory with drain plug in pan- not sure about the external filter. NAPA has tranny pan drain plugs kits on shelf or can be ordered for many vehicles. Allison trannies on bus and semi tractor come with drain plugs. Old technology, simple to used during engine oil change, takes maybe 10 minutes to drain 1/2 tranny fluid and top up after. And if you have a drain tank with a filter, can use the drained tranny and engine oil in fuel tank of diesel truck- I know of a couple shops that do that and Hertz was supposed to do it also along with Ryder. RN

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