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Holden Rodeo 2006: LPG fuel economy?

I was told that if I were to run LPG in my 2006 Holden Rodeo 3.0-litre turbo diesel I would get more power and better economy. I tow a caravan and find it struggles on hills. What are the facts on this and is it cost effective?

There are a number of LPG systems available for diesels, but they’re different from those we’re used to on petrol engines. In the case of the diesel system an amount of LPG is substituted for diesel, the engine never runs on LPG alone, and the effect of that is to increase power. The idea is then that you back off the throttle and save on fuel, but some people make full use of the extra power and can suffer engine failures as a result. I would urge caution and certainly urge you to talk to other owners who have done the same conversion you are considering to get their experience. It’s also crucial to have an experienced installer do the work on your car.

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