Can anyone help us out please.just replaced me coolant 02 wrx sportwagon a few months ago.filled up main reservoir at the front of car and put some in reserve tank on top of engine.done check for air ran it heated up.when I drive it and check under bonnet there always is some coolant on the reserve tank on top of engine I have looked for leaks don't seem to have any coming out the 3 pipes going into reservoir.any answers welcome cheers.

 

First off the "reserve tank" on top of the engine is the main reservoir, the plastic one is an over flow.

Depending on the levels in both, you may have overfilled, so some might come out of the main cap.

secondly, does the one on top of the engine still have the original metal pressure cap? If so, remove it and check the seat.
If it's damaged, or tired looking, try a new cap.

Lastly, if problems persist, get a garage to do a sniff test to check for headgasket failure, it might be over-pressurising the system.

 

U put to much water and coolent in mate that's why