Head gasket or something simpler?

[3257adam]

Hi all I'm new to all this

Had my zr 105 se for 2 years now and been pretty much perfect.
I have recently noticed I'm loosing coolant. Every 2 weeks it's back to low level.
Have had a good look round the engine bay and can't see any leaks.
There is a little bit of mayo in the rocker cover but not on the lid.
The coolant looks fine tho and the car runs perfect once warmed up and never over heats and I have hot air from the blowers.
Is it hgf? Or could it be something like inlet manifold gasket or something smaller?
Thanks.

[petrol-head16v]

I would say HGF as there's mayo (oil & water mix) in the rocker cover what the miles on the clock ?
Welocme btw

[Adaam]

I have the same problem, its always using coolant, but no mayo in the coolant. Mines done 62k

[3257adam]

Mines only done 41k! Hardly drive it as cycle to work. Never even gets red hot. Do about 12 miles 3 times a week.

[Remobilise]

HGF or No HGF.
Eternal problem..usually it can also be that the inlet manifold gasket is leaking on the blind side and you will not find it, sometimes it leaks into the cylinder nearest the gearbox - take the plug out and check for water in the cylinder. As it leaks it dries almost instantly, cardboard under the car behind the sump will leave a tell tail trace over night.

Mayo on Vauxhall cars oil fillers caps is normal, engine condensation, sometimes the same on rovers after a cold couple of nights...but in the oil or header tank and its HGF.

If you change the inlet manifold gasket stick the higher quality Viton one in place of the junk one supplied with cheap headsets gaskets.