I got my car back at midday. The chap who owns the local garage came
in and worked all morning to sort out my cock-up.
He drained the tanks. I had not realised that there was more than one
in my little car, but they are saddle tanks and he had to remove the
back seat bench and open the tops of each tank before using a little
pump to drain each one.
Meanwhile he got me to go and fill a jerrycan with 20l of diesel to
start the tank refill. I then drove it off to a BP station and topped
up the tank; I used Ultimate diesel in the hope that the better
quality would do a better job of removing the contamination. It's not
a complete waste of money as I do get slightly better fuel consumption
from the better diesels (Total Excellium is the other one I've tried).
And the charge for the chap's morning's work? A miserly 100 Best
British notes! And that included having to dispose of my fuel in his
new very expensive bunded waste tank.
I have been very lucky and I won't bother the List with my woes for a
moment longer ... ;-)
Chris
On 4 Oct 2008, at 04:23, Doug wrote:
>
> On Friday, October 03, 2008 17:46, Jon Mitchell wrote:
>
>> 3) Despite both the above, everyone keeps telling me it's a very bad
>> thing to do. I don't plan on trying it out soon though.
>>
>> I don't really know the chemistry behind it all, but I know that one
>> burns much hotter than the other. My own logic tells me that as
>> Petrol
>> requires a spark to ignite it, and there are no spark plugs in a
>> diesel
>> engine, then in theory once the ratio of Petrol to Diesel in the
>> cylinder gets too high it just won't ignite. I'm not about to test
>> it
>> out in my new toy though.
>
> Petrol has a higher ignition point than diesel intentionally. When
> the diesel
> is injected into the cylinder it needs to ignite immediately and not
> after
> some quantity has been pumped in. The important point to remember is
> that
> this is happening before the cylinder reaches maximum compression and
> therefore maximum temperaure. The problem, as I understand it, is
> that if
> petrol is used instead of diesel a quantity is injected before the
> fuel
> ignites. Because the charge of fuel burns all at once, it vastly
> increases
> the loads on engine components.
>
> I would believe that how it reacts depends on a bunch of factors.
> High octane
> petrol in a relatively low compression cold diesel might not run at
> all. Low
> octane petrol with a little diesel mixed in, run in a high
> compression hot
> diesel might not be that noticeable. Some combination inbetween
> could trash
> an engine.
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