1994 BMW 540 - coolant loss - how big a job is this?

Recently aquired car ( see last weeks question! ). This problem was highlighted to me, before purchase, as follows; consistent loss of coolant but no visible leaks, no change on the temp. guage, no change in performance. On long journeys very slight steaming visible when stationary. A mechanic advised previous owner that it is v. likely a gasket failure at the bottom of the cylinders, where they meet in their ' V ' configuration - %26quot; not a difficult fix %26quot;. Does this fit in with anyone else's experience of these V8's? Could it be a DIY job? Thanks in advance.1994 BMW 540 - coolant loss - how big a job is this?If you are thinking of doing something like this, don't. Just take it to a garage and they can sort it out. If they don't fix the problem you can take it back to them saying, you haven't fixed it, fix it. Whereas if you did it yourself you could totally screw it up and it may not even drive once you have done it.1994 BMW 540 - coolant loss - how big a job is this?IF YOUR MECHANICALLY INCLINED.1994 BMW 540 - coolant loss - how big a job is this?It's so easy to damage parts of the engine when putting it all together. You would have to follow the directions to the letter. Everything would have to be re-torqued properly. Yes it can be done but like I said. There could be some great difficulties and road blocks.1994 BMW 540 - coolant loss - how big a job is this?You really,really have to know what your doing to DIY it is no easy fix you have to take the top off the engine and get the heads shaved before you put it back together.1994 BMW 540 - coolant loss - how big a job is this?Before you start tearing a %26quot;V%26quot; apart,a big job,get a couple of tests done.First is a reactive coolant test,this is a liquid that changes colour from blue to green if there is any combustion gases in the coolant,it's definative.Second would be a coolant pressure test,the whole coolant system is pressurised up to 15-20 psi,and believe me,if any micro holes are present,it'll shoot out.You can buy the coolant reactive dye tester from Amazon.