Reason i asked is it looks like the engine i bought off some1 has a fooked HG as the oils gone all nice and baileys looking flushed it out with cheap oil twice and put some more cheap oil in just to run it and it was still slightly coloured, so wanted 2 run some flush thru it to clean it before i change the HG and put fresh oil in again.

Wouldnt normally bother using it would just change the oil every 3k odd miles as it usually comes out clean

Althou knowing my luck the fucked oil has prob done the shells, havn't driven it but the car was started and moved about.............