Petrol in diesel

Hi, I use 200-300ml of petrol to a full tank of diesel every now and then to clean the injectors. Not purely for performance but does help a fraction.
Regards
Tour Boy

Amazing how it takes "up to a month for crude oil price drops to be seen at the pump" ........ yet increases appear the same day!

I understand you can add a portion of petrol to diesel and it is used in winter to stop the diesel gelling. Something around 15% I think.

I used 15% petrol to thin a batch of veggie oil and all worked fine until the engine was hot and working towing a trailer. Then I got these nasty, very very nasty, noises coming from the engine. Like a deep growling noise and loss of power. My instal is not standard, nor my fuel mix, as I run a heat exchanger to heat the fuel - veggie oil - so this is not advice for anyone. What appears to have been happening is the petrol was igniting earlier than the oil and the flame fronts were colliding inside the chamber. This was a bad thing and I won't be doing it again. Engine had good power tho prior to this.

Short answer is yes you can add a bit of petrol. The proportion needs to be low, I'd take a punt at less than 10% following my experience, but you'd need a damn good reason to do it. My exhaust was noticeably hotter to touch, indicating higher internal temperatures which 'may' end up causing damage, or 'may' just be a result of the extra bang in the mix that gives more power.

Yes petrol does mix well with diesel, try a bit in a suitable container and let it sit for a while and see what happens.

Short answer yes you can, suggestion is no you don't.

Tim

Petro and Diesel mix
4 weeks ago
Friend of ours accidently put 85 litres of petrol into a 95 litre tank in his 80 series landcruiser turbo Diesel

He got 14 kms down the road and it just stopped no warning, the symptoms were like air in the fuel system

He got it towed here so we could have a look not knowing what was wrong, went to bleed the fuel system and it smelt like petrol (checked his reciept and comfirmed it was) . Emptied the filter bleed the injectors and the fuel filter and started it on the Sub tank ran a little rough for a minuite and back to normal

Since then he is getting better fuel economy.

Very lucky though my brother who is a Diesel mechanic said that petrol can make the injectors sieze as the petrol doesnt have enough lubricating qualitys