SuperDaz

Active Member
Stupidly, I've just put 7l of unleaded into my 2006 TD5. Maybe also stupidly, I immediately filled it to the top with diesel. Will I get away with out doing any damage or do I need to add an additive or lubricant of some sort?
 
I would have stopped at the 7L petrol stage and had a misfuel service come and empty the lot and start again.
Could do some/a lot of damage with the mixed fuels. What ratio of Diesel/Petrol do you think is in there now?
It doesn't take a lot of petrol in a diesel to start causing damage I think.
Others may have brighter news (from their experiences).
 
Its a 60 liter tank ?

So you have put in 7 liters of petrol which is 11.6%. I believe the maximum is around 7% so you 'might' cause damage if you drive it, you could add a small amount of low ash, mineral 2-stroke oil which will act as a lubricant.
300ml would give you around the 200:1 ratio and 200ml is 300:1
Don't use semi or fully synthetic oil ....
Still wouldn't do any long distance high revving activities ...

You could also drain out 30 liters and top up with diesel, reducing the ratio to around 6% which is below the max...

Or be super safe and follow @Anaconda and @DanClarke advice ... likely to be cheaper in the long run.
 
I would have stopped at the 7L petrol stage and had a misfuel service come and empty the lot and start again.
Could do some/a lot of damage with the mixed fuels. What ratio of Diesel/Petrol do you think is in there now?
It doesn't take a lot of petrol in a diesel to start causing damage I think.
Others may have brighter news (from their experiences).
There was 1/4 tank when I stopped to fill up. Put 7l unleaded and then filled to the top with diesel. So it's 7l unleaded in the tank and the rest is diesel.
 
If it was a mechanical diesel; isuzu, 200tdi, etc, I wouldn't worry about it. A TD5 and later aren't as robust. I'd be inclined to follow miktdish's idea. Drain some and top up.
injector/pump seals are fine, they'll be nitrile or viton.
 
Drive with the petrol in the diesel (diluted down or not) and risk some engine damage and a big bill. Or empty the tank and refill with diesel, no risk. I'd drain the tank.
 
Think the pump deuse fuel system only runs at 4 bar on the td5, high pressures are actually generated at the injector itself.
Being a tightwad I would chuck a litre or two of oil the the tank and run it.

I had a td5 years ago and I ran it on all sorts of crap dirty diesel, to be fair it had three lift pumps due to the crap fuel, but no other issues, last time I checked it was still on the road with 185k on the clock.
 
After a LOT of faff yesterday, I managed to syphon out 60L of contaminated diesel. I've put 500ml of low ash 2 stroke in the tank and I'm going to fill her up today and keep filling her up every time I've used a 1/4 of a tank or less. Thanks for the collective advice everyone.
You might also want to put some extra dose of Redex to help clear the system. Then with an empty tank, fill up with premium diesel and extra Redex.
 
What is redex going to do, exactly? 🤔
Good question. I am not an expert. I just grew up having 2 stroke motorcycles and we put so many additives that they seemed to drive on steroids 😆. Would it help? Who knows. Would it damage? I don't think so. In case of doubt, I would add it.
 
Good question. I am not an expert. I just grew up having 2 stroke motorcycles and we put so many additives that they seemed to drive on steroids 😆. Would it help? Who knows. Would it damage? I don't think so. In case of doubt, I would add it.
You put oil into the petrol if it's old enough, yes.
Redex is a system cleaner though not very strong apart from a carrier and additional lubricants it will contain various petrol related solvents
 
So, following on from last week after draining out the fuel. The next morning, I only preceded to run out of fuel on the way to the petrol station! It became obvious quite quickly how unprepared I was, having broke down on a busy but narrow country road with no high vis, warning triangle or phone signal. Fortunately a neighbour from the village happened to come past after about 10 mins and gave me a lift to the petrol station where I had to buy yet another fuel can, fill it up and go back and put it in the Landy. I then preceded to flatten the battery, and the booster pack I bought previously was at home (no use there is it!). Fortunately I had finally had some foresight and had bought some jump leads from the petrol station too but unfortunately they wouldn't reach from the front of my neighbours car to the battery. So, neighbour now takes me back home but is now running late herself. I commandeer my wife who is working from home and supposed be going in a meeting shortly and we jump in my Nissan Navara, go back to the Landy and manage to squeeze the Navara up on the soft grassy verge next to the Landy. Huge relief when it finally starts and I ask my wife to follow me to the petrol station just in case it doesn't start after I fill it up. In the end all was good, however, my wife hasn't driven a manual for many, many years so I suspect the Navara may need a clutch a bit sooner than it would of previously LOL.

In hindsight, it would have been cheaper in time and money to have got the garage to drain the fuel as soon as I realised my error. On the upside, I've learnt a few lessons along the way!
 

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