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I wonder if different pump delivery rates have something to do with it?
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Thats an unusual amount of foam OR, we have our own fuel tanks for the trucks but use BP if needed, haven't really noticed any significant foaming for a number of years.
I wonder if the anti waxing additive might have been increased slightly to explain the excess foam?
Don't really get splashbacks in either trucks or our pick up, but then the filler necks are so short on both unlike the 3' or more on most cars.
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They add silicone to stop foaming. Maybe it was missed out or the delivery was made from some other oil co.'s depot and was incorrectly specified.
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They add silicone to stop foaming. Maybe it was missed out>>
I hope it was not put into petrol instead, I believe there was a problem with this recently. My diesel top ups have been OK. All our local diesel comes from the Grangemouth refinery, suitably doctored by distributors.
Edited by Old Navy on 07/02/2009 at 11:01
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Silicone - are you certain? What happens to the silica produced in combustion?
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Not had a foaming issue for years. Mostly on Tesco, but not encountered it on any other either.
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"Silicone - are you certain? What happens to the silica produced in combustion?"
Yes, I am certain,
en.wikipedia.org/wiki/Siloxane
It's also in cheap liquid-oil fried food too!
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Silicone was implicated in the supermarket fuel incidents. Diesel anti-foam was added to petrol by mistake. The result was in effect a coating of glass on the oxygen sensors of the affected cars.
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Andrew, here is a patent for Siloxane used as a fuel antifoam.
www.freepatentsonline.com/EP0891406.html
here is another about it's use in engine oil
www.patentstorm.us/patents/6221815.html
I have also found many references with google about how it can become Silicon Dioxide/Silica (an abrasive white powder) and damage engines, turbines, turbochargers and O2 sensors. So if the fuel foams up, maybe that's a GOOD sign!
Edited by Hamsafar on 07/02/2009 at 13:03
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Wonder if silicone has gone into petrol then? Or can filling stations managers (are they franchised?) order a tanker full of `cheapo` amongst all the additived regular fuel - to make a fast buck?
(Wasn`t a filling station on the upper A1 caught doing that around 12 years ago)
Anyway, It wasn`t the fill rate as the Mk2`s filler neck seems really restrictive - if you don`t want repeated cut off - you have to insert the nozzle only about four inches and literally pour it steadily in.
Incidentally, went out East to Bridlington yesterday - no snow or indeed salt on the roads - returned home and fueled the van at the usual Shell place and no foam at all.
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