My 1997 Disco 1, was working fine tonight. Made a stop and had to get a jump start. A few miles afterwards, coolant gauge shot up.,and when I looked under the bonnet most of my engine oil was leaking out of the expansion tank.
Could this be anything other than a leaking head gasket?

 

 

Couldn't it also be possible for the oil cooler connection in the radiator rupture and cause oil to be in the coolant?

 

My money would be on head gaskets.

 

I don't think you would be pouring oil out of your expansion tank from head gaskets.. how much was actually coming out? is there coolant in your oil? How about your transmission oil?

 

Apparently you haven't had a head gasket fail yet...... Your time will come.

Check the oil dipstick, see if it's a chocolate milk shake color. If it is its head gasket failure. Just by the spike in temp it's pretty telling.

 

Thanks guys, Actually, it was a blown cylinder head gasket. There were no signs of coolant in the oil , but I have changed the oil, anyway cleaned most of the sludge from the system, Fitted my spare radiator. Now the bugger would not start. I am wondering if I had pinched the gasket on assembly, as I can hear a compression leak on turnover.

 

Pinching that gasket would be a real trick if you used the proper torque technique for the head bolts and did so in the prescribed sequence.

This may sound silly, but check your #8 spark plug. Some spark plug sockets are too large to fit past the exhaust manifold and the spark plug gets partially crossed and not set all the way in.

 

Perhaps from the beginning, I should have stated that my Disco carries a 300 TDI Diesel Engine.

 

ha ha ha.... yeah, that would help!!!! ha ha ha LOL