Type gear oil to use in tranny - 1990 Eagle Summit

Manual gear boxes use gear oil, automatic boxes transmission fluid.
Check your owners manual or contact your Ford dealership for advice.

you need to look at the tranny cooler located in radiator that's the only way tranny fluid can get out but how its crossing over to motor oil im not sure unless you also have a motor oil cooler in the radiator.and that will cause tranny problems ,don't try to drive till you resolve these issues., my other thought is oil is leaking out back of motor and mixing with leaking tranny fluid, try draining tranny first to see if motor oil is really in tranny.

I personally run 80-90 gear oil but some manufacturers recommend 30 grade for their boxes ( straight mineral oil) best check it out at a service dealer centre.

Those A5 trannies are junk and can set the vehicle on fire in less than 5 minutes with low fluid. Red fluid is tranny, oil is oil. Rear seal-oil- big repair. Tranny coolant pipes-Tranny fluid-small repair. Replace filter, fluid, and gasket-it's probably over due-and check again for leaks. rear tranny seal leak, average size job.. Never use the stop leak! Throwing flour on the tranny works better-Just kidding.

removing excess oil will be a good start to see if you have a problem. Excess oil causes over heating of the oil and over pressure in the tranny or frothing of the oil which lowers operating pressures in the tranny

Probably has the wrong type of oil in it. Most manual trannys call for a GL-4 gear lube as it contains the additive to help protect the yellow metals in the synchros. I read about this a while back at this site: http://www.bobistheoilguy.com/forums/ubbthreads.php

Manual Transmission - uses Dextrin II or Mercian type fluid. A 85W/90 gear oil may be used with the T500 trannie in very warm climates or if gear/bearing noise is excessive.

1997 Automatic transmission uses Mercon/Dexron II

I don't know what you did, are you sure it was the oil drain plug and not the transmission? Was it the dipstick that told you you added too much oil? How much is too much? The vw doesn't have a pan for the oil to sump in, it is a splash type engine, the crank rides in an oil bath and splashes all over everything, It also has a pump to get the oil into the rockers, the drain plug is in the middle of the engine. The tranny drain plug is back a ways, You should have 2 plugs on the side of the tranny, one is for level and the other is a filler, pull th ebottom one, if oil seeps out it is ful, if not, pull the top plug and fill it up with 90 weight for standard or tranny fluid for automatic. Get that taken care of, you could be riding around on a hot tranny, no oil. I pulled the plug on my truck one day to change the gear oil, and nothing came out, oops. No wonder it was whining like a freight train.

Ok, you will need to first check the fluid level in this transmission. if the trans is sealed, you will need to take to the dealer for a fluid check. assuming that the fluid level is proper, this will usually be caused by a faulty transmission control module and faulty shift solenoids as well. these devices are located on and inside the trans and i recommend testing each device for flaws.


Most slips are the result of gear ware but, the solenoids and TCM will cuse this issue as well.

80/90w gear oil.