Hello! My parents have a W124 E200 which they bought brand new back in 1995 and has 120k miles on the clock - it's never missed a beat in 19yrs until this weekend. Yesterday the car over heated in traffic and was recovered back home - I had a look and found that the header tank was full of mayo - there was over a litre of mayo which points towards a head gasket failure. I am currently weighing up the options, I could do the job myself or obviously get a merc specialist to do the job, as the car is worth about £500 the repair will cost more than the car is worth but my parents are very attached to the car and would like to have it fixed rather than scrapped. Would anyone know what a merc specialist is likely to charge? I shall will be ringing around on Monday to check out prices but would like an idea if anyone has one. I am confident with the spanners (my day job is an engine development engineer at a luxury car brand in Cheshire) so tackling the job myself isn't a problem as I have done similar jobs before like changing the timing chains on our Golf R32 which was a solid 3 day job! Does anyone have an hints or tips for doing this job diy or know of any online guides for this job? Any help and advice would be much appreciated.