Worth using fuel additives in my Skoda?

Hi,

I have a 1.6 TDI Greenline 2012 Skoda Superb with 70k km up. An injector recently had to be replaced. I don't know why, possibly because the car is unused for a few months each year. Is there any benefit in using a fuel additive to prevent further damage and, if so, which?

I also have a 2.0-litre petrol turbocharged Mercedes-Benz C-Class (245hp) of much more recent vintage. Is there a benefit of using a fuel additive from early in a car's life? Is there any evidence that these products. work?

Many thanks,

Philip

Philip Donegan (Ballina)

Aug 2017 Filed under: aftermarket

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Expert answer

Hi Philip,

The short answer is that there are some benefits to using additives, but they’re not a miracle cure. Some additives, such as Redex, STP, or Dipetane, can apparently help to reduce the build-up of carbonised particles of soot and burned fuel on the insides of your engine, which can lead to improvements in reliability, fuel economy and emissions.

That said, there’s little here that’s scientifically proven. The benefits of additives tend to be more word-of-mouth than provable fact, but there’s certainly no harm in using them and if you notice a benefit, well that’s all to the good.

I would suggest that you’re better off sticking to a strict service regimen, using original parts and a qualified technical, than relying on additives though. And of course, as you already know, diesels need to be driven regularly to stay in good condition.

Neil Briscoe - Complete Car Advisor
@neilmbriscoe