you will probably need to change heads gaskets
Volkswagen Vanagon Official Factory Repair Manual Bently Publishers.com
Find the leak and fix it.
To fill the radiator coolant on a VW Vanagon, first ensure the engine is cool and remove the radiator cap. Use a funnel to pour the recommended coolant mixture (usually a 50/50 mix of antifreeze and distilled water) into the radiator until it reaches the fill line. Additionally, check the coolant reservoir and top it off if necessary. Finally, replace the radiator cap securely and run the engine to circulate the coolant, checking for any leaks.
I have an 83 aircooled vanagon camper...so far it has been very reliable. Just remember to check/change oil and take care of it.
5 degrees +/- 1 degree BTDC @ around 2300 RPM, with coolant sensor disconnected.
4.8 quarts after a filter change.
For a 1990 VW Vanagon Syncro, it's recommended to use a coolant that meets the specifications of G12 or G12+ antifreeze, which is a blend of ethylene glycol and water. This coolant provides optimal protection against corrosion and overheating. Make sure to mix it with distilled water in a 50/50 ratio for effective performance and to avoid mineral deposits. Always check the owner's manual for specific guidelines and recommendations.
Vehicle likely overheated, or for some other reason, the head gasket has been breached, allowing coolant to be burned in the engine. The coolant is consumed, appearing as whitish smoke emitting from the tailpipe.
Oil in the coolant tank indicates a head gasket leak.
Oil and water do not mix. oil will float on top of coolant if you remove radiator cap this will be very visible, on the other hand coolant in oil will look milky white.
An oil coolant?æ hose is a tube or pipe that allows engine oil to circulate via the radiator in order to cool down. Without an oil coolant hose, oil will get to hot to operate efficiently.
Engine? 3.1L V6 are notorious for intake manifold gasket leaks. get it fixed soon or your engine is at risk. My Lumina had oil in coolant and coolant in oil. If there is tan foamy stuff on oil fill cap, coolant is in oil too.