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Author: Subject: dooh petrol in diesel car HElP
watsonpj

posted on 25/8/09 at 06:14 PM Reply With Quote
dooh petrol in diesel car HElP

I've been a numpty and started filling my y reg 1.8 TDI focus with unleaded. I had only put 51p in when i noticed so stopped immediately and then decided to fill it 2/3rds full of diesel. I working on the basis that petrol is lighter and will therefore not get in the system.

So what do i do now
1. Keep it topped up 1/2 to 2/3 (to allow evaporation room) for a month and hope it all evaporates off.

2. Get it down to about 1/3rd and get the tank drained down.

3. get it in the garage straight away and get it sorted (no doubt very expensive).


help
Pete

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big_wasa

posted on 25/8/09 at 06:17 PM Reply With Quote
1/2 L shouldnt hurt it.

It will mix so no point in dumping part of it.

2/3 has got to be 40 L so 1/2l is minimal

[Edited on 25/8/09 by big_wasa]

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afj

posted on 25/8/09 at 06:18 PM Reply With Quote
51p dont worry i have to suck petrol and diesel from peoples cars every day so dont worry

edit to add ive got a experement running at the moment with 10 litres of petrol mixed with 10 litres of diesel at work and its been a week and it still looks the same ie no seperation

[Edited on 25/8/09 by afj]





eerrrrrrrrrrrrrrrr

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mistergrumpy

posted on 25/8/09 at 06:19 PM Reply With Quote
Can you not just carry on as usual? I know it knackers your cat putting diesel in a petrol but I didn't think it was too bad the other way round.
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l0rd

posted on 25/8/09 at 06:20 PM Reply With Quote
I believe that as it is just about half a litre of petrol it won't do any damage.
I have heard of people puting some petrol on diesel in order to clean up the engine.

I am sure i will be told off by someone but i wouldn't do much about it.

I am sorry i cannot help but i am really interested on what everyone else says

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Blackcab

posted on 25/8/09 at 06:25 PM Reply With Quote
Will be fine - just keep your diesel level high and it will just blend in with no damage at all - wife does it all the time ... not me ... just the wife !
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Big Ali D

posted on 25/8/09 at 06:26 PM Reply With Quote
I seem to remember my mothers old audi 80 tdi handbook, having a recipie for "Winter Diesel" which was basicaly a 10 to 1 mix of diesel and petrol, for severe cold climates.

[Edited on 25/8/09 by Big Ali D]

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wilkingj

posted on 25/8/09 at 06:37 PM Reply With Quote
quote:
Originally posted by Big Ali D
I seem to remember my mothers old audi 80 tdi handbook, having a recipie for "Winter Diesel" which was basicaly a 10 to 1 mix of diesel and petrol, for severe cold climates.

[Edited on 25/8/09 by Big Ali D]


Its an old trick, but nowadays its not necessary. There are anti waxing agents in diesel that prevents this, unless you are living in Siberia its not a problems anymore.

Diesel used to go waxy and would not flow through the filter in very cold weather. As said... not a problem these days.







1. The point of a journey is not to arrive.
2. Never take life seriously. Nobody gets out alive anyway.

Best Regards
Geoff
http://www.v8viento.co.uk

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jollygreengiant

posted on 25/8/09 at 06:37 PM Reply With Quote
In days before unleaded fuel, people used to put a gallon of petrol in a diesel FILL during winter to stop the diesel from freezing during the winter time. So IF you only put 51p's worth in it would not be a problem providing you FILLED the fuel tank.

The biggest problem the you will have is that unleaded fuel is a contaminant for the rubber used in the seals in the diesel fuel system, again, however, only 51p's worth is unlikely to cause a major problem within the next 100k.

I hope this helps to clarify things.





Beware of the Goldfish in the tulip mines. The ONLY defence against them is smoking peanut butter sandwiches.

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MikeR

posted on 25/8/09 at 06:39 PM Reply With Quote
with the TDI i think you're fine - keep it topped up to be sure - say never less than 1/2 to 2/3rds.

TDCI would probably be worth draining it due to the cost of fuel pumps and the chance it would break.

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r1_pete

posted on 25/8/09 at 06:46 PM Reply With Quote
Youll be ok don't worry, I put £10 worth in a 2003 peugeout HDI, realised and filled up with diesel. It was a company car, so I didn't care, but it never hurt it, a colleague bought it and its still going strong, well as strong as any pug 90 bhp diesel.






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watsonpj

posted on 25/8/09 at 07:10 PM Reply With Quote
Thanks guys i thought it would be ok with a constant top up.

cheers Pete

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mad4x4

posted on 26/8/09 at 06:22 AM Reply With Quote
If it is only a couple of quid of Petrol you put in and the tanks is empty immediatly fill it to the brim of diesel and you be fine.

as said ^^^ was the old recipie for winter diesel.





Scot's do it better in Kilts.

MK INDY's Don't Self Centre Regardless of MK Setting !

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DarrenW

posted on 26/8/09 at 09:50 AM Reply With Quote
Its up to you how you handle your little error, but if it were me i would have filled up with diesel (assuming tank was almost empty to start with). Drive a few miles and keep topping it up for a few fills (approx £10 at a time), eventually it will be so diluted i doubt it will cause a problem.

In theory the petrol could knacker all of the seals in the system, but i really doubt your concentration will be high enough.

I seem to recall you can get diesel additives, maybe a can of that will reduce the risk further. Its your risk at the end of the day though.






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MikeRJ

posted on 26/8/09 at 10:11 AM Reply With Quote
51p worth of petrol is going to be completely unnoticeable, zero chance of any damage. You don't have a common rail engine so there is nothing to worry about.

Why do you believe you can only fill the tank to 2/3rd's full? Expansion of the fuel due to temperature is pretty small, raising the temperature of 50 litres of diesel by 50 degrees C would make it expand by around 0.5 litres!

[Edited on 26/8/09 by MikeRJ]

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