Hi There......new member here.

I have an A6 TDi Ultra.......Sept 2015. Ad Blue warning light on after c4k miles........bought 4litres from Halfords, £20 I may add, and light is still on. How much do I need to add and is there anywhere that sells it cheaper apart from Amazon??

 

Thanks

 

Fieldyblue

Hi There......new member here.

I have an A6 TDi Ultra.......Sept 2015. Ad Blue warning light on after c4k miles........bought 4litres from Halfords, £20 I may add, and light is still on. How much do I need to add and is there anywhere that sells it cheaper apart from Amazon??

 

Thanks

 

Fieldyblue

 

I read somewhere that it's a 17 litre tank but you should probably check your manual to be sure. Apparently you need to top up my a minimum amount (saw something about 5.7 litres) for it to register.

 

That's really expensive at Halfords. Apparently some BP garages sell it via a pump for HGVs at around 60-70p per litre and you can fill up with that?