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How Often Should You Walnut Blast Your European Car?


A walnut shell blast is one of the most common methods of cleaning a European car’s engine.

European auto manufacturers – like Mercedes-Benz, Volvo, Mini, Volkswagen, Jaguar, Audi, and Porsche – prefer direct injection engines, as they increase fuel mileage and engine power. However, the more you drive one of these European cars, the more carbon collects in your engine’s intake manifolds and intake valves.

When this happens, a good walnut blast is precisely what you need to break up that carbon and get your engine working at maximum capacity again.

READ MORE: Why Your European Car Needs a Walnut Blast

How often do you need a walnut blast?

The frequency of walnut blasting for your vehicle’s engine will vary depending on several factors. Many dealers recommend that owners of cars with direct injection engines schedule their first walnut blast between 22,000 and 40,000 miles.

The Performance Auto Specialists team recommends incorporating a walnut blast into your routine maintenance at around 30,000 miles. Then, after your first walnut blast, you should not need another cleaning for another 40,000 to 50,000 miles.

However, other factors – like your driving habits, the quality of gas you use, and how well you take care of your car – can affect your timeframe for a walnut blast.

If you are unsure whether your European car’s engine needs a walnut shell blast, look out for the following signs of carbon build-up:

  • Loss of horsepower
  • Engine misfire
  • Extended start time
  • Rough idling
  • Trouble speeding up
  • Fewer miles per gallon

Still unsure whether it’s time for a walnut blast? Just call the European auto experts at Performance Auto Specialists at (910) 343-1650.

Performance Auto Specialists – Wilmington, NC

Performance Auto Specialists is proud to offer eastern North Carolina efficient, affordable European car repairs, with years of experience fine-tuning our craft. We service European vehicles 3 years and older that are no longer covered under a factory, bumper-to-bumper warranty. 

We train our expert technicians to service direct injection engines and get your Mercedes-Benz, Volvo, Mini, Volkswagen, Jaguar, Audi, or Porsche back out on the road in no time.

Think your vehicle’s performance is suffering? Let us have a look at your engine intake manifold and valves. Get quick and reasonably priced European auto repair in Wilmington here with Performance Auto Specialists! Schedule an appointment or call us at (910) 343-1650.


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