Roger Clements ASKED THE GUIDE

Toyota 4Runner Turbo

I would like to fit a turbo to my 1994 Toyota 4Runner to improve the fuel economy and performance. It's a 2.8-litre diesel with 190,000 km on the clock. Is this advisable?

I wouldn't recommend it. Having done 190,000 km the engine is relatively old and worn, adding the stress of a turbocharger won't help it. On top of that if you make use of the extra performance you would get from adding the turbocharger, as most people do, you won't see the fuel economy benefits and you're likely to damage your engine.

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