Proper scientific testing, personal experience, something read in the newspaper, or just a guess?
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11 years ago
Tesco must be off their trolley
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11 years ago
SWTNFI?
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11 years ago
I'm not sure of the temps but it was well below zero.
Not sure about waxing reversal but would like to know.
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11 years ago
One I learned here. Since I don't 'obey', SWMBO wasn't appropriate.
She Whom Than No Fairer Is.
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11 years ago
She Whom There No Fairer Is. Or something
Fuckbunny
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11 years ago
Varies on if an anti waxing aganet has been added... Not sure about "worse case" but I have a feeling it's only a few degrees below freezing. Once the additives are in -10 -15 shouldn't be a problem. Note the "shouldn't"...
Yes once it warms back up the wax goes back into the fuel. Late father had stories of fires being lit under the diesel tanks of trucks during the winter of '47 to get the fuel fluid enough for the engines.
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11 years ago
I recall a coach trip to go skiing in Scotland, several decades ago. The coach company got through about five coaches in a week because they kept waxing up and having to be towed away.
In the UK, summer fuel starts to cloud at 3C and will clog filters at
-5C. Winter fuel, sold from November to March, will start to cloud at
-5C and will clog filters at -15C.
Warming will dissolve the wax particles again.
Colin Bignell
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11 years ago
On 23/11/2012 08:23, Dave Liquorice wrote: ...
In 1963, railway locomotive depots had oil drum fires set between the diesel locomotives, to keep them warmer overnight. At Old Oak Common, where a chap I knew worked as a fireman, some bright spark decided they were a fire hazard and had them all extinguished. Next morning there was a hurried round up of semi-retired steam locomotives.
Colin Bignell
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11 years ago
Tanks.
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11 years ago
To prevent it, with older diesel engines *only*, you can add a small percentage of petrol to the tank when you fill up. This is *not* recommended for common rail diesel engines, as it can easily wreck the pump and injectors.
With modern diesel formulations and regular fuelling up, it isn't necessary, as the fuel companies add anti-waxing agents to cope with the anticipated weather conditions.
I do remember having to heat fuel lines and tanks in the '70s with a blowlamp to get vehicles running on the odd occasion that the anti-wax stuff wasn't added. Fun, it wasn't. :-/
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11 years ago
I thought the safer/preferred addition was paraffin/kerosene rather than petrol?
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11 years ago
As diesel is basically paraffin with added lubrication that wouldn't necessarily cure the waxing problem.
On the engines I worked with, a few (2- 5%, IIRC) percent of petrol reduced the wax point by just enough to get you out of trouble. It also made it easier to start due to the lower flash point of the petrol. As I said, modern engines do not respond well to this due to the tighter tolerances in the fuel system, and they are much more critical regarding the lubricity of the fuel.
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11 years ago
Depends on the sensitivity of the adaptive engine management tuning, eg variable ingition advance. Some cars shows a difference, some don't. My old Saab 9.3 got a very good mpg on good petrol, though 5 star or normal Shell didn't make much difference. The current Skoda shows a difference though not so much.
rusty
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11 years ago
TBH I have no idea how much is spent or should be spent on parking my van. All traders permits are supplied when I am woking in restricted parking zones (that was £18 a day in Lambeth) and I have never paid for parking in Doncaster - the car clampers (now ex clampers) are customers of mine so as long I used one of their car parks it was free parking. Well it still is.
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11 years ago
One of my kids had a large suspicious looking mole. Dr agreed, and referred us to a specialist, who said it should come off.
Before op day I took a day off work and took child out of school to meet up with the surgeon and do pre-op checks.
After a while I started to get shirty with them, why were we sitting there with a little booklet (most of which was about general anaesthetics and thus irrelevant) for all this time. In the end they phoned his secretary.
(a) He's in the other hospital today and (b) as it's a local only you don't need to see him in advance.
Andy
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11 years ago
You'd be surprised - for a decade I ran my Transit and car on the fuel from one filling station (part of a national chain), just as a habit. One week when in the car I changed to another one on the outskirts of town as it was cheaper, being a no-frills place and owned by a wholesale oil distributer. The difference was remarkable - not just in the mpg (not huge, only a couple of mpg) but the engine was much livelier and revved more willingly. This is an engine with nothing fancy on board, just a traditional mechanically pumped diesel.
This doesn't mean that the wholesale place's fuel was fantastic, it simply showed to me the other place's fuel was a bit crap and I'd been using it for so long, I hadn't noticed the low quality of it. I've no doubt it complied with the relevant standard and all that, but it was definitely as low as they could get within the law.
On my bike I now fill up at the nearest Esso station, as I'm absolutely bloody sure that the petrol being sold by most of the other small outlets around here is a bit shit. At least with Esso, I can be sure of some consistency of results. As Nightjar points out, the differential cost of fuel per mile is negligible for the sake of getting something decent in the tank.
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11 years ago
Is it f*ck.
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11 years ago
You should have run it on chip oil; your cam, rad and exhaust would have been fine. Don't know about your bight point though; perhaps you were coasting.
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11 years ago
Feel free to explain further. I like to learn stuff.
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11 years ago
Bloody excellent. My forte is a the 3-day soup /casserole /stew. Massive pot, everything in it, and spin it out. Comes from living in flatsville during my student (and later) days and I had a repertoire of recipes that are coming back to me. I bag and freeze the surplus nowadays, so have a variety of things to fall back on when I can't be arsed some days.