G'day,

I have read many of the horror stories of people accidentally putting petrol into the fuel tank of a diesel engine. Touch wood (touches head) it won't happen to me.

RACQ and RAA SA both sell this device

https://shop.racq.com.au/Category/Di...lling%20Device

There is also another sold at Wholesale Cap, Hats, Clothing & Promotional gifts Supplier.

There is also an article on the Used Cars - New Cars - Search New & Used Cars For Sale - carsales.com.au web site where it mentions that most 2010 and later vehicles have such a device already fitted.

Does anyone who has purchased a diesel vehicle recently know if such a device is fitted to VW diesels? I hope to take delivery of one in the next couple of weeks.

Basically, it relies on the fact that a diesel bowser nozzle is larger in diameter than a ULP nozzle. The device has three tags 120 degrees apart that must all be pushed outward by the nozzle for the flap to be released. If a ULP nozzle is inserted, the smaller diameter means that all three tags cannot all be pushed outwards and so the flap will not move thereby giving the person filling the car an indication that the wrong nozzle is being used.

Thanks.