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AdBlue
#11
Ive 171 berlingo and i top up tank every 2 months , ive had no issues and my citroen dealer only said full tank should do a service interval to make sure and fill
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#12
The adblue is a strong reducing agent (urea). It will oxidize to ammonia in time loosing is reductive properties. Mixing old with new might not be the best way to do it, as the "old" oxidised can help accelerate the oxidation of the "new" topped up, reducing the overall efficiency of the adblue.
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#13
(11-01-2018, 08:46 AM)Luis Rosa Wrote:  The adblue is a strong reducing agent (urea). It will oxidize to ammonia in time loosing is reductive properties. Mixing old with new might not be the best way to do it, as the "old" oxidised can help accelerate the oxidation of the "new" topped up, reducing the overall efficiency of the adblue.

Would it be better then,to top up say 5ltrs every 5,000miles,than completely fill at say,15,000 miles? I have bought the AdBlu already & was going to top up before my trip to Germany in June @ 13,000 miles approx.
Strawberry flavoured windows  Dodgy
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#14
(11-01-2018, 08:46 AM)Luis Rosa Wrote:  The adblue is a strong reducing agent (urea). It will oxidize to ammonia in time loosing is reductive properties. Mixing old with new might not be the best way to do it, as the "old" oxidised can help accelerate the oxidation of the "new" topped up, reducing the overall efficiency of the adblue.

Interesting info, and I for one am always open to learn.
Seems then that running the car low on adblue is the best solution , especially if you don't do,loads of miles.
[-] The following 1 user says Thank You to Lighty for this post:
  • ron
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#15
Just put 10litres in. All ok. £12 for a container that includes pouring spout. If I put 10litres in every about 7-8k miles that should do it. Seems about the practical & economic way to diy. Smaller containers cost more & 20litres is too heavy to lift.
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#16
Yea 10 litres is manageable, you should try filling up most other cars .
Generally the filler is in the boot next to the spre heel, and getting a 20 litre in position takes some strength .
Berlingo has the most sensible filler ever.
We often wonder how long before someone thinks it's the rear screen wash filler though  Tongue
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#17
It is also funny (and I had not thought about it), that the urea tanks can freeze in very low temperatures in winter. For preventing this, some brands implemented heater systems for the tank...so if the heater system heats with constant temperature, then having less solution in the tank can also be negative (less mass for the same heat, equals higher decomposition rate)...Each manufacturer should then know about his system by extensive testing, and filling behavior should be advised for the best results in time...

https://en.wikipedia.org/wiki/Diesel_exhaust_fluid
[-] The following 1 user says Thank You to Luis Rosa for this post:
  • ron
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#18
I've always filled around half-up Ad-Blue (5-10L), since it's reducing the weight the car has to carry all the time. It will give me warning a thousand miles it's emtpy anyway. I'd only fill completely up when doing long holiday trips.

Interesting about freezing. Today I just drive at around -12C where it's supposed to freeze, but no problems what so ever.

Maybe they sell better Ad-Blue here in Northern Europe?
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  • ron
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#19
(10-01-2018, 01:29 PM)Johny555 Wrote:  Theres a use by date on adblue,maybe better running it a bit low,so you put fresh stuff in,

(16-01-2018, 11:06 AM)Lingo_Berlo Wrote:  I've always filled around half-up Ad-Blue (5-10L), since it's reducing the weight the car has to carry all the time. It will give me warning a thousand miles it's emtpy anyway. I'd only fill completely up when doing long holiday trips.

Interesting about freezing. Today I just drive at around -12C where it's supposed to freeze, but no problems what so ever.

Maybe they sell better Ad-Blue here in Northern Europe?

unless they mixed it with other things, that are not so good to get into your exhaust, like glycerin or high salt amounts, then the freezing temperature of the Adblue solution should remain the same...so there must be some sort of heating system too in the berlingos...
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