few qs on changing thermostat

[DEZ]

td42 got a new thermostat for it today going to be changing it 2mrw just got couple quries before i start, do i need to drain all the coolent in the rad or am i better off leavin it ?, want to double check bleeding the system, leave car up hill and fill a bit whilist idioling with the cap off till filler bottle reaches its point? any advice helpful

cheers

[pongo]

best advice i can give is buy a genuine thermostat. Did this after people on here said similiar.

Drain only about 1/2 but if old coolant, why not renew it anyway.

[DEZ]

yeah herd the same got a genunie one so its all good, ok so drain it all, change the thing and then mostly fill it, start her up and continue to fill it till the bottle is on half or what ever it is. Another 1 how many Ls does the rad take?

cheers dez

[MyGQ]

depends, around 13 to 15L of ready mix coolant.

[coxy321]

I changed mine on tuesday. Took all of about 10 min.

-Pulled off upper radiator hose from radiator side (caught coolant in icecream tub as its only 2 weeks old)

-pulled off upper radiator hose from thermostat housing

-unbolted thermostat housing

-cleaned both mating surfaces with razor blade (to remove old gasket)

-put in new thermo

-put in new gasket

-bolt it all up, put on radiator hose

-put coolant back in, bleed air out of system

-take car for test drive

-re-check tension on thermo housing bolts and radiator hose clamps

DONE!!