migueluva

First of all sorry if this thread is not in the right place. Will correct if need be.
Carwise: easy drives until 100-120km/h no loss of coolant. When opening the engine a bit (quite speed relaxed still in Portugal) it starts to lose coolant. At 170-180kmh around a liter every 30 mins. Not enough with the heat and evaporation to pinpoint the origin. No apparent hissing sound after a heavier load. Any such issue with anyone? If not, at least some ideas as to what I should do. Thamk tou very much in advance.

Miguel

Zirconocene

Have you checked your oil?

Good luck

migueluva

Thanks for the reply. Had oil in coolant a while back. Leaky radiator replaced. Fully flushed a sorted. Oil at level. At 3/4 of the rod for the last 2000kms

Zirconocene

OK, just making sure you aren't seeing the coolant migrating into the engine via a headgasket leak.

Cheers

migueluva

Back of my head scary thought….oil clean, with no signs of cross contamination

GregBBRD

Start with replacing the cap on the coolant reservoir.

Mrmerlin

In addition swap in a new hcv and short hose a T stat and rear seal and O ring check the top right side of the radiator for coolant leaking from the flange

Petza914

Get a pressure tester and pressurize the system to 15-16 psi and if the needle is falling slowly, find out where the coolant is going. An ultrasonic sniffer someiimes helps pinpoint it too. Helped me find a leak at the water bridge on one of mine.

drooman

You can pull the spark plugs and examine them for coolant deposits. Could be going out the exhaust pipe.

What a cool looking car you have… Looks like it’s getting used property.