Re: Losing coolant : going on for 7 months
in the past i've seen the same thing happen with a head gasket leak. it was only leaking when hot so a compression test showed nothing, which led to me banging my head off a wall for a while, then one day the owner brought it round when it has lost almost all of its coolant, and while it was hot it had almost no compression on 1 cylinder. the pressure build up from that leak was forcing coolant out the overflow on the expansion tank. it would never get hot enough to do it at idle or when moving at speed, only when driving in heavy traffic for some time. very strange, i assume it was to do with the head expanding when hot.