[Kuroblack]

Maybe I've been living in a cave, but yesterday I noticed these in the dealership - BMW branded for petrol and diesel. Does anyone have any epxerience of them, positive or negative?

No idea how much they are by the way, as I say, just noticed them yesterday by the service desks.

[BIFCAIDS]

Says not to put additives in on the filler doesn't it?

[old grey steve]

They are made under licence from memory TunAp manufacturer them in their plant in Germany, though if you find someone who sells TunAp buy their product as you get more for your money

Forte also offer a additive both of which we use

[Russbmw]

It's about £12 a bottle.

I use in on the X5 and my 335.

No noticeable benefits or bad side effects to be honest. Supposed to keep your engine clean from glazing and build up, so it's more of a preventative thing in my case, and £12 every few months I can live with.

[bazz780]

I have heard mixture of reviews, i guess it depends on how the state of build up is on your car, if its already not bad maybe no difference?

[acerboo]

millers do something similar £10 for a bout 5 tankfuls! and yes it does say on the fuel filler car NO ADDITIVES unless its bmw at £12 a bottle!

[SO8]

On a fellow BMW Forum ***cough*** land ... Cotswold BMW are selling it for £6.50 a bottle I think.

Guess it can't do any harm. If the engine is direct injection the benefits are more limited though.

[bazz780]

Shouldnt do harm as bmw developed product

I heard 6 pounds delivered

[TheBlondeFella]

I bought it for £6.50 via another forum and have used 3 treatments so far.

I noticed difference after the 1st treatment but just thought I'd stick in another couple to make sure. ;O)

[Kuroblack]

Originally Posted by TheBlondeFella

I bought it for £6.50 via another forum and have used 3 treatments so far.

I noticed difference after the 1st treatment but just thought I'd stick in another couple to make sure. ;O)

What kind of difference?

£6/7 doesn't seem too bad - I notice the leaflet talks about 5 treatments to get the benefit.

[TheBlondeFella]

Smoother engine and slightly better mpg.

[AWSAWS]

I wonder if pouring methylated spirits into the tank with your Vpower will make our fuel similar to E85 in the US?