You are at the servo, fuel prices are painful, and you grab the 91 nozzle instead of the 95 or 98 your car is supposed to take. Maybe you did it to save a few dollars. Maybe you just grabbed the wrong one. Either way, now you are wondering if you have done something expensive…
So you are driving along in your Ford Everest, everything feels fine, and then a warning pops up on the dash about AdBlue. Maybe it says the level is low. Maybe it says the system has a malfunction. Or maybe you are reading this because something worse happened and AdBlue ended up in the diesel…
To check what fuel your car takes, look for the label inside the fuel flap first, then the owner’s manual, then the engine badge on the boot. If none of those settle it, a dealer or a registration check against the vehicle details will confirm it in a minute. Most drivers would swear they know…
Yes, physical misfuel prevention devices work. They fit inside a diesel filler neck and mechanically block a narrower petrol nozzle from entering, so the mistake becomes impossible rather than unlikely. The trade offs are fitment, cost and slower filling on some high flow pumps. It is a fair question to be sceptical about, because the…
A diesel that has run out of fuel usually will not restart straight after refuelling because air has been drawn into the fuel system, and air stops the system building injection pressure. Many modern diesels re-prime by cycling the ignition several times before cranking. Running a petrol car dry is embarrassing. Running a diesel dry…
Biodiesel is a legitimate fuel, not the wrong fuel. Australian pump diesel may already contain up to five percent biodiesel without labelling, and most modern diesels handle that without any issue. Higher blends such as B20 are worth checking against your manufacturer first. Biodiesel makes people nervous in a way that ordinary diesel does not,…
A short period of rough running immediately after a fuel drain is normal, because a little air and residual fuel remain in the lines. Roughness that continues beyond the first few minutes, or past the first tank of fuel, usually points to a fouled filter, fouled spark plugs, or damage from before the drain. The…
If the engine was never started, wrong fuel sitting in the tank for days causes very little extra harm, because the contamination stays where it is. The exception is AdBlue, which is corrosive and does get worse with time. The bigger risk of waiting is that somebody else starts the car. This question usually arrives…
No fuel additive can fix wrong fuel. Nothing sold in a bottle separates petrol from diesel once they are mixed, and no additive removes water or sludge from a tank. Additives are maintenance products for fuel that is basically sound, not a rescue for contaminated fuel. It is a reasonable thing to hope for. You…
Sugar does not dissolve in petrol or diesel, so it cannot caramelise inside your engine the way the legend claims. It sinks and sits at the bottom of the tank, where the real risk is granules blocking the fuel pickup and filter. The fix is a tank drain, not a new engine. Pour sugar in…
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