Hello after some advice please,, as the title suggests im getting gunk build up in the reservoir, so after hours scaling this forum and the net ive boiled it down to oil cooler or head gaske.now i dont think its the gasket as the oil in the car has no white residue, the car runs fine starts first time and no loss of power. can i repalce the seals in the cooler or is it a new one. my car does lots of short cold runs which i no dont help,any thoughts will be much appreciated
Thanks Ross