[melosv8man]

I have bought a car to break, it's what I do. I've just got a 2001 PT Cruiser 2 litre, 140 bhp with an lpg system fitted. I'm wondering if I can fit this to my 2004 307cc? The cruiser is single point injection though, looks like a closed loop system too.

 

[reliable406]

I would not bother with a single point injection system on a modern engine as multipoint systems are cheap now
Problem is if/when you get a blowback it can crack the manifold I know I tried with plastic manifold engines its not worth it

Injection systems are much better I have had lots of lpg cars my Subaru is lpg my mk4 escort is lpg my v6 espace is lpg

The escort is single point and works great but other 2 are multipoint

 

[clanless]

Ah yes LPG, I remember that.

I ran a 1.6 astra - cost of gas worked out as 60 mpg when priced against petrol.

Not really cost effective anymore - the gov't are steadily eroding the price differential between petrol and lpg.

Fewer stations making it more difficult to find.

I used 'flash lube' to protect the valve seatings - that's more that doubled in price since I went back to diesel.

My advice is leave it in the car.:thumb:

 

[reliable406]

Ah yes LPG, I remember that.

I ran a 1.6 astra - cost of gas worked out as 60 mpg when priced against petrol.

Not really cost effective anymore - the gov't are steadily eroding the price differential between petrol and lpg.

Fewer stations making it more difficult to find.

I used 'flash lube' to protect the valve seatings - that's more that doubled in price since I went back to diesel.

My advice is leave it in the car.:thumb:

RUBBISH lpg is still half the price of petrol 65p at present I can travel from lands end to john o groats on lpg if I so wished !!

Went to France in both a diesel and an lpg powered espace lpg car was far cheaper.

Flash lube only needed for crap engines decent engines DO NOT need it

I have had lpg cars for over 10 years and the cost of gas has always been half that of petrol the oil stays clean so needs changed less so they are way cheaper to run.

Only had 1 failed engine and it was in a Subaru these are prone to failure even when run on petrol though !!

My present Subaru runs lpg WITHOUT flashlube has run for 2 years towing trailers being driven as intended 260hp twin turbo no problems either running on or obtaining gas.

 

[melosv8man]

I've heard of flashlube, isn't it an oil to lubricate the upper cylinders? How do you get it to mix with the gas should it be needed?

 

[clanless]

It's introduced into the gas stream - it looks like a thin oil. It protects the valve seat from wear - unleaded protects valve seats - lpg doesn't.

There is no 'list' which says which engines need it - so if you don't use it - that's your risk.

LPG contains 80% of the energy by volume of petrol - you automatically get a 20% drop in mpg and you end up with another system to maintain/go wrong.

If it was simply a case of changing to lpg and halving your fuel bills - everyone would be doing it. They're not.

 

[clanless]

The other common misconception is that you can extend the drain interval for lpg powered engines, because the oil stays cleaner.

Yes it does, but the oil still looses its viscosity at the same rate as a petrol engine. You keep running an lpg engine with the same oil - you will end up with a 0w/0 oil with no wear inhibitors - although on the plus side the oil will be clean.

An lpg system does not increase the value of your car - 99.9% of the motoring public are not interested.

 

[reliable406]

99.9 % of the public are mugs then

I have heard all the arguments against over the years from it will blow up to the government will just put the price up its all just talk.

I have done well over 100 000 miles on lpg and I believe the facts

Some engines are simply not worth converting as they are crap

I have saved a fortune

Good systems are very reliable in fact the worst systems are so called manufacturers factory fits !! Vauxhall and Volvos are worst in that respect

The power output does NOT reduce if its a good system the mpg does drop slightly but depends on driving style

Oil comes out clean so IS better for the engine regardless of viscosity argument as its not full of carbon so can be left longer safely

Insurance companies will not refuse to cover you.