Wynns Fuel Saver

Wouldn't touch it with a barge pole. Initial indications are that it works, and it does the job well, however, Wynns Fuel Saver (plus anything similar - Slick 50, Cobra) contains teflon which over time will increase the amount of sludge build-up in the engine and then clog it up completely. Even a routine oil change won't necessarily rid your engine of it.

If you planning to keep you car for a long time then my advice is don't use it. If however, you're only going to have it for 2 or 3 years, bang it in the sump and get the benefit. However, some poor sod down the road is going to have a big problem.

Have a look on

And, if it's sooooo wonderful, why don't manufacturers recommend it???

That's always been my concern - if fuel savers, miraculous additives, magic petrol-enhancing gadgets and what have you are so good why aren't they put in place at the beginning?

Si

Best one is the one that QVC have the pilot green I think you call it - two magnetics lol sure its great! haha NOT!

Martin

I am sure there is a similar product called asta 3000. Which doesnt contain teflon ?

Any good ?

A friend used asta 3000 on a bx and he had problem after problem with the fuel pump - maybe is was nothing to do with the product but it went though 3 pumps before he sold it (maybe he should have drained the petrol tank!) and oil and started again with new stuff

Martin

Lots let the Dealership "carry" your old oil in a container away for disposal lol

Can't see them doing that thou :-) Martin

Then why do modern engines not wear out? A few years ago many would need a complete overhaul after about 70,000 miles.

Yeah, might try that next time :-)

Actually, I lied - I've just looked it up and the exact wording is "special tools and job knowledge". So not only is specialist knowledge required but a *very special* 17mm ring spanner.

For the record, I agree with everything else you said. I tried Slick 50 many years ago (I was young, had no sense, and fell for all the hype.) It completely blocked my oil filter, and I'd never touch the stuff again.

But for reasons I won't go into here I hold the car industry in the deepest contempt. I hate to see a good argument spoiled by suggesting that anything they do, or say, or recommend should be given the slightest bit of credence.

Cheers!

The only thing I use at every service is injection cleaner. My point is use a good engine oil - I like the Vauxhall full synthetic and the car is very happy with that :-)

Martin

I used a bottle of something called "Injector Magic" years ago, and it was brilliant. The car would run fine, but it took 10 seconds of cranking to start when cold.

After the treatment it would start on the button.

I reckon it cleaned it out the cold start injector, which is probably more prone to blocking as it's only used during cold start cranking.

I fine that with the cleaner every service the car has better pick up - I wouldn't use it at every top up of fuel.

I don't use Redex its called something Moly it comes in a steel can with a blue lid. Martin

None of these companies have compelling evidence that it actually works except in their own contrived cases and their selected customer testimonials. The ASA has ruled against every single product which claims to reduce fuel, and improve power/acceleration etc. Any product which advertises in those terms should be viewed with extreme cynicism.

Gareth

Precisely. My local council (as do most I would suspect) let me dispose of used engine oil for free at the local tip. The only special skills are a spanner (or socket) and an oil filter remover, along with the ability to tighten an oil filter by hand.

Peter

None at all - it makes a brilliant wood preserver - our shed is living proof to that - it is over 40 years old and it has only ever had engine oil on it - still no rot at all. Never poured any down the sewage yet!

Gaynor & Tim

That will happen when you add something so thick that when you turn the bottle upside-down it takes nearly 30 seconds for the air bubble to get to the other end.

Using Redex on very worn engines can remove carbon deposits around the pistons/rings that were actually helping to prevent excessive oil passing into the combustion chamber and being burned.

Another product by Wynns is a chemical to stop slow oil leaks in engines from around the gaskets. Does it work and is it recommended in the case of a slow seeping type leak ?

If it's a small leak, why bother. If the additive really can seal the gaps between gaskets, then is it not likely that it can also seal small oilways and oil jets? Needless to say this would rapidly kill the engine by oil starvation, just like teflon additives do.

If it's a big leak then get it repaired properly. If it's an old banger that isn't worth fixing just buy the cheapest oil you can get for topping up.

The Dervboy

That's, like, a whole post full of sense. Is this really usenet? Pop over to alt.autos.audi for what usenet's really about :-)

(that's the thread I started about 5-cylinder 2.5TDI Audi engines)

Peter

The theory is that it swells the seals etc to stop leaks - not plug them with an additive as things like radweld do with cooling systems.