Many automatic transmissions use a cooler inside the vehicles radiator to help maintain the transmissions temperature. The transmission pumps ATF thru the cooler. If a leak occurs in the trans cooler the ATF is pumped into the radiators coolant. The engine coolant can also mix with the trans ATF and enter the transmission the same way in which case would be fatal for the transmission.
Usually you get oil in your radiator when you blow a head gasket and oil leaks into your radiator. Blown intake gasket is also possible, as well as a hole in the engine's water jacket (very uncommon). Also, if the vehicle's transmission cooler coil is internal to the radiator, a leak from it may be possible (most tranny coolers are external for this reason).
Are you sure it is motor oil? It may very well be tranny fluid, check to make sure it is full and clean. The tranny coolers are internal in the radiator in automatics. If there is coolant in the tranny fluid it will look like milk, make sure you do not drive at all, till fixed and flushed
The cooler lines attach from radiator (on the plastic ends on sides of radiator) facing engine, to the tranny. You may need to use a flared end wrench to loosen them. Install new lines and do not overtighten, you may use an open end wrench to tighten. Properly disopse of old tranny fluid and fill tranny to proper level.
Bad Head Gasket. See a mechanic ASAP..
Oil in the radiator is usually an indication of a leaky head gasket.
loose cooler lines to the radiator or a broken one, front or rear tranny seal, a bad O ring on the dipstick tube, or the tranny oil pan gasket.
in the oil pan you have drain radiator and tranny fluids first
What vehicle? Most likely to radiator that cools engine coolant, if not then there is a separarte tranny oil cooler.
Connected to the radiator.
Usually you get oil in your radiator when you blow a head gasket and oil leaks into your radiator. Blown intake gasket is also possible, as well as a hole in the engine's water jacket (very uncommon). Also, if the vehicle's transmission cooler coil is internal to the radiator, a leak from it may be possible (most tranny coolers are external for this reason).
Cracked radiator end caps since the tranny fluid runs goes threw the caps for cooling that is the only way tranny fluid can get in the radiator
Are you sure it is motor oil? It may very well be tranny fluid, check to make sure it is full and clean. The tranny coolers are internal in the radiator in automatics. If there is coolant in the tranny fluid it will look like milk, make sure you do not drive at all, till fixed and flushed
Yes.
I had a similar problem with my 1994 3000GT. When I would shift into reverse, it would stall. As is turned out, the radiator was partially clogged, cutting off flow for the oil cooler. After replacing the radiator, I have had no problems with this. Ok wow 3000gt don't have an oil cooler the vr4's do... A radiator has nothing to do with why the tranny kills the car when you put it in gear.... You my friend were robbed by your mechanic.... It's probably the idle air control on the throttle body.... It could need a rebuild of the clutch with a full kit.... I recommend finishing the flywheel as well. Hope its not the tranny sychros that means new or re built tranny .... Good luck think simple first....
Because there are lines running from the radiator to the tranny, this lets the fluid flow through and be cooled so that it does not over heat in the tranny and cause damage to your bands inside your tranny.
Pass side are for Tranny Coller lines Driver Side are for oil cooler lines
the tranny cooler is at the bottom of the radiator and has apparently ruptured, you will need a new radiator and get the tranny flushed and a new filter in it ASAP.