I have been busy today changing all fluids on my 05 sti, I have done transmission, diff, engine oil and filter and changed all brake fluid flushing new fluid through. Only item left is the antifreeze, I am unsure of best way to do this to ensure I get all air out can anyone please post up a step by step guide for this as I want to make sure I do it right.

Thanks

 

I just did coolant yesterday on our 05 wrx drained from plug at bottom of rad. I flushed through with water filled rad slowly. Cap on then filled headertank. Left running for about 10 mins with header cap off and heaters on no problems with air at all.

 

drain it through bottom of rad with caps off
flush through if needed or changing antifreeze colour etc
refill via the pipe coming off the header tank to turbo(backwards fill through engine)
refill with rad cap off till level comes up then fit cap
then fill till header tank is full refit cap run car with heater on full and check the levels

also fill plastic expansion half way between min/max.

just use 5l concentrated halfords red antifreeze and 5l litres of deionized water mix together and you will be left with some premix for the future

 

thats the way to do it

 

Thanks for advice if flushing do I just put hose in header tank cap and run it till comes out clear. Hopefully will try it the weekend and that will finish my 60k service.