I put Diesel in Petrol Car....ugh!

dito kou

It wasn't alot, €10...so 6ish litres or so, I didn't realise I did it, I drove it for abit and noticed it was abit sluggish, following Morning their was alot of blue smoke and then it hit me what I must have done.

I filled it to the brim with Petrol so as to dilute it, I thought this was the thing to do but few people have said no, it'll need to be drained out and oil changed and hope for the best.

What should I do??

05 Golf.

BALLLLLLS!

Plug

Keep the tank topped up with petrol. I remember a diesel jeep came into us with petrol in the tank, it was about 75/25 mix, 75 being petrol. I used it in my petrol car and while I was getting a few flat spots in power it was okay and didn't damage anything. That was many thousands miles ago. As for the oil. I don't think so.

MugMugs

Small amount of petrol in a diesel is bad.

Small amount of diesel in a petrol is very bad. Ones oil the others spirit. Stop using your car and get the system drained straight away.

Plug

MugMugs wrote: »

Small amount of petrol in a diesel is bad.

Small amount of diesel in a petrol is very bad. Ones oil the others spirit. Stop using your car and get the system drained straight away.

Honestly never heard of that. Not saying your wrong. But 6 or 7 litres diesel on top of nearly a full tank of petrol should not be something to worry about.

MugMugs

She's brimmed now. But driving it with diesel in the lines and at the bottom of tank could merit a very costly knackered catalytic converter.

Which isn't nice.

Plug

MugMugs wrote: »

She's brimmed now. But driving it with diesel in the lines and at the bottom of tank could merit a very costly knackered catalytic converter.

Which isn't nice.

I done what I did with the petrol/diesel mix a few months before the NCT and it sailed threw it. Emissions spot on.

MugMugs

I believe you. I stick a bit of petrol into mine too now and again. But this is diesel in a petrol.

Plug

MugMugs wrote: »

I believe you. I stick a bit of petrol into mine too now and again. But this is diesel in a petrol.

But mine is a petrol car:p And I done what he did(kinda).
Petrol in a modern diesel is bad though.

mullingar

I thought a diesel nozzle is designed wider so it wouldn't fit into a petrol car

Stinicker

mullingar wrote: »

I thought a diesel nozzle is designed wider so it wouldn't fit into a petrol car

Really depends on the car, I drink a petrol BMW and its definitely petrol only as the entrance is so narrow. My sister drives a toyota (also petrol) and you could fit either into the gap.

Do truck Diesel stops here have wider nozzles? I hired a Diesel car in Australia last year and remember having a horrid time trying to fill it when I accidentally started using the truck diesel pump at one station as the auto catch kept clicking off.

maxfresh

Stinicker wrote: »

Really depends on the car, I drink a petrol BMW and its definitely petrol only as the entrance is so narrow. My sister drives a toyota (also petrol) and you could fit either into the gap.

Do truck Diesel stops here have wider nozzles? I hired a Diesel car in Australia last year and remember having a horrid time trying to fill it when I accidentally started using the truck diesel pump at one station as the auto catch kept clicking off.

Truck stop diesel pumps do have a much bigger nossle, i used to use one to fill a van as i had a dci card for work ,bit of a pain to fill, but fills quickly because of higher flow rate

YouTookMyName

MugMugs wrote: »

Small amount of petrol in a diesel is bad.

It's not that bad. It's good in some engines.



How the hell did you get the nozzle into the petrol filler? The diesel nozzle is bigger then the petrol at the pumps.

O.A.P

dito kou wrote: »

It wasn't alot, €10...so 6ish litres or so, I didn't realise I did it, I drove it for abit and noticed it was abit sluggish, following Morning their was alot of blue smoke and then it hit me what I must have done.

I filled it to the brim with Petrol so as to dilute it, I thought this was the thing to do but few people have said no, it'll need to be drained out and oil changed and hope for the best.

What should I do??

05 Golf.

BALLLLLLS!

Keep it toped up with petrol for a week or two and it will be ok. The worst case is cleaning the lines and fuel tank out.
Petrol into a diesel engine however could destroy an engine.

bronzer

A mate of mine borrowed my car recently and thought he was doing the right thing by putting a few yo yo's of petrol in it......he thought great idea but the problem was that my car was a diesel....he put abou 30 yo yo's worth into a nearly empty car....car wouldnt start,it'd start,it wouldn't....eventually got it motoring and drove it for an hour or two....car is running better now.....burns all the ****e out of the engine.....

Eoin

MugMugs wrote: »

Small amount of petrol in a diesel is bad.

Small amount of diesel in a petrol is very bad. Ones oil the others spirit. Stop using your car and get the system drained straight away.

I was under the impression it was the complete opposite; that petrol in a (modern) diesel was potentially far more serious.

MugMugs

Could well be. Never had any issues.

ted1

bronzer wrote: »

A mate of mine borrowed my car recently and thought he was doing the right thing by putting a few yo yo's of petrol in it......he thought great idea but the problem was that my car was a diesel....he put abou 30 yo yo's worth into a nearly empty car....car wouldnt start,it'd start,it wouldn't....eventually got it motoring and drove it for an hour or two....car is running better now.....burns all the ****e out of the engine.....

will petrol on its own ignite under compression? Without spark plugs it should just sit there.

Eoin

bronzer wrote: »

A mate of mine borrowed my car recently and thought he was doing the right thing by putting a few yo yo's of petrol in it......he thought great idea but the problem was that my car was a diesel....he put abou 30 yo yo's worth into a nearly empty car....car wouldnt start,it'd start,it wouldn't....eventually got it motoring and drove it for an hour or two....car is running better now.....burns all the ****e out of the engine.....

It sounds like you were lucky, based on horror stories posted here in the past. Diesel contains necessary lubricants. You don't want too much of that "****e" burnt away.

PaulKK

ted1 wrote: »

will petrol on its own ignite under compression? Without spark plugs it should just sit there.

I may be wrong but I thought petrol has a lower compression ratio ignition point than diesel.

I.E it will ignite sooner under pressure.

2 stroke

ted1 wrote: »

will petrol on its own ignite under compression? Without spark plugs it should just sit there.

Iirc petrol self ignites under compression, without glowplugs, at 350 degrees C, diesel at 300 C. Petrol is bad for common rail systems.

Hal Emmerich

Any definite answer to this??

Hellrazer

Well Ive always been told that diesel in a petrol isnt the worst but petrol in a modern diesel is really really bad.

As a matter of fact in a former job we used to keep the old mixes that drivers put in their cars after we drained it and run it in petrols.Some of them would have been say a 75/25 mix of diesel to petrol and we mixed it down with more petrol and used it ourselves.

None of us ever had a problem with it.

Hal Emmerich

How does one drain a fuel Tank?

Is there a bung at the bottom underneath the Car or do you have to stick a pipe down where the Fuel goes in or.........how?

-Corkie-

Hal Emmerich wrote: »

How does one drain a fuel Tank?

Is there a bung at the bottom underneath the Car or do you have to stick a pipe down where the Fuel goes in or.........how?

It varies from car to car but some have a bung.

I started a thread here before about a guy I know who purchased an A6 of a garage in dublin. He collected it and filled it with diesel on the way home. Shortly afterwards the car stalled on the M4 and when the AA diagnosed the problem the man had presumed the car he just bought was a diesel and not petrol. He lived not far from your home town actually.;)

Hal Emmerich

-Corkie- wrote: »

-Corkie-

Hal Emmerich wrote: »

Taxi man in Longford area..:)

imitation

Found this on the AA's website, you can always for over 250 yoyos if your not sure (and in the Dublin area:rolleyes:)

http://www.aaireland.ie/AA/AA-Membership/Fuel-assist.aspx

Hal Emmerich

-Corkie- wrote: »

Taxi man in Longford area..:)

Oh right, I thought you meant something else.:o

Never heard that Story.



From this Site

On efi cars i take the return line off the fpr and put another long hose on... start the engine and the fuel pump does all the work for you. No need to suck petrol.

efi = electronic fuel Injection.

What does fpr stand for?

-Corkie-

Hal Emmerich wrote: »

Oh right, I thought you meant something else.:o

Never heard that Story.



From this Site



efi = electronic fuel Injection.

What does fpr stand for?

Fuel Pressure Regulator I would be thinking..

Hal Emmerich

-Corkie- wrote: »

Fuel Pressure Regulator I would be thinking..

The fact I don't know what that is or where it is probably means I'm best leaving this alone.

Turn on your Green Light Corkie:p

-Corkie-

Hal Emmerich wrote: »

The fact I don't know what that is or where it is probably means I'm best leaving this alone.

Turn on your Green Light Corkie:p

I will not..:D

Wikipedia was my friend there...:p

Hal Emmerich

I hope you gave Jimmy a few € for using his servers!

Garob

Stupidly just put 1.5 litres of petrol into VW polo.....filled to brim (about 38 litres) with diesel, should be alright?!? AA website says anything under 10% fuel capacity is ok. Any advice?

MugMugs

Keep it brimmed and you'll probably be okay.

MetzgerMeister

Stinicker wrote: »

I drink a petrol BMW

Top Dog

For all those saying that putting any amount of petrol in a modern diesel will be catastrophic - thats a blanket statement that does NOT apply to all modern engines.

In fact, in many modern diesels its actually recommended to put some petrol in the diesel tank for periods of extreme cold as it moves the freezing point even further down the scale. The manual that came with my diesel (common rail) actually states that you SHOULD put in petrol at a ratio of 10-15% of the total volume.

I was putting €15 of petrol in with every fill of diesel (€95) last winter and had no issues whatsoever. No extra smoke, no extra noise, and no noticable change in engine power or smoothness either.

So for anyone who owns a diesel - just check your owners manual - you might be surprised