Yes it will, Do not turn the ignition on !! AdBlue is really nasty stuff. It is not a fuel or fuel additive. It is a mixture of manufactured urea and ionised water. It will corrode metals and damage plastics used in the fuel system and engine. AdBlue is used to spray minute amounts into the exhaust system to reduce emissions and is totally separate to the fuel system. The AdBlue delivery system is made with safe materials that are not damaged by it. Unlike petrol and diesel which have similar specific gravities and readily mix with each other, AdBlue is much heavier and sinks to the bottom of the fuel tank. The bottom of the tank is where fuel is drawn from to feed the engine. Turning on the ignition, even before starting, activates the fuel pump which circulates diesel through the fuel system. In this case it starts circulating AdBlue through pumps, fuel filter, common rail and back to the fuel tank. If you hadn’t realised that the diesel was contaminated and started the engine it will eventually draw neat AdBlue into the injectors and cylinders and although it may run initially it will soon stop as the AdBlue does not combust. It will now be reacting with all the components it is in contact with.

What is a safe amount of AdBlue?

Absolutely NONE ! Even the smallest amount such as half a litre could bring your engine to a stop. Do not delay It is essential the problem is dealt with promptly to minimise any damage. At worst the vehicle could be a write off due to the cost of parts and labour to replace the whole fuel system and the engine. At best the fuel filter will need changing after the contaminated fuel has been purged and replaced.

Yes it will, Do not turn the ignition on !! AdBlue is really nasty stuff. It is not a fuel or fuel additive. It is a mixture of manufactured urea and ionised water. It will corrode metals and damage plastics used in the fuel system and engine. AdBlue is used to spray minute amounts into the exhaust system to reduce emissions and is totally separate to the fuel system. The AdBlue system is made with safe materials that are not damaged by it. Unlike petrol and diesel which have similar specific gravities and readily mix with each other, AdBlue is much heavier and sinks to the bottom of the fuel tank. The bottom of the tank is where fuel is drawn from to feed the engine. Turning on the ignition, even before starting, activates the fuel pump which circulates diesel through the fuel system. In this case it starts circulating AdBlue through pumps, fuel filter, common rail and back to the fuel tank. If you hadn’t realised that the diesel was contaminated and started the engine it will eventually draw neat AdBlue into the injectors and cylinders and although it may run initially it will soon stop as the AdBlue does not combust. It will now be reacting with all the components it is in contact with.

What is a safe amount of AdBlue?

Absolutely NONE ! Even the smallest amount such as half a litre could bring your engine to a stop. Do not delay It is essential the problem is dealt with promptly to minimise any damage. At worst the vehicle could be a write off due to the cost of parts and labour to replace the whole fuel system and the engine. At best the fuel filter will need changing after the contaminated fuel has been purged and replaced.