Fuel additives act as a magic potion, with an ability to transform a tired engine into a smooth operator - or, at least, that's what the advertisers would like you to believe. They cost from around £5 ...

Under normal circumstances, most modern engine oil and gasoline brands work fine on their own to keep your engine running smoothly. But there may be cases where even the best of them could use a ...

Fuel injectors can get gummed up with dirt and fuel residue over time. Photo credit: David Traver Adolphus / Autoguide.com. Over time and miles, your car might start to slow down. It might not ...

Over time and miles, your car might start to slow down. It might not accelerate as quickly as it once did; the engine may not run as smoothly as you remember, or the fuel economy may dip—but ...

There is little in the way of independent research that demonstrates the effectiveness of engine additives, while anecdotally some car owners swear by them and others say they have no effect. Fuel ...

David Kaiser, spokesperson for Liqui Moly said an additive would offer “very, very good” protection against metal parts and aluminium if drivers top-up with the new petrol. He said additives use ...