Holden Caprice Engine Problems
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Converting Caprice to LPG
By my reckoning it would take you around three years to recoup the cost. That's based on an installation cost of $4500 before the government grant of $1500, and regular unleaded petrol costing $1.40 and LPG 60 cents per litre.
Caprice question
THERE'S no problem installing an LPG system on the Gen III V8 as you have in your car. The sequential injection system is the best. You lose virtually no performance with the system as it generally automatically switches across to petrol when driven hard and the fuel demand from the engine climbs.
Fuel and his money
THE V8 Adventra was a bit of a dog in many respects, but 20 litres/100km is a bit too high. The Adventra is a heavy old nail so I would expect it to be pretty thirsty. I would think it should get 16-17 litres/100km on average. The only thing you can do is to make sure all is well with the engine and the electronics controlling it, make sure your tyres are inflated correctly and that wheel alignment is correct.
