Leaded Petrol Replacement

[kurtbarker]

Hey guyz, my VK Commodore is meant to be run on Leaded petrol, but considering LRP is no longer available what should I be using? Leaded petrol has a ron rating on 96. Now i've heard people say you can put in standard unleaded [91 ron] with a leaded additive. Now if I put in 98 octane premium which has a higher ron rating than what leaded cars required, would I still need the additive?

Thanks in advance

 

[The1985divo]

hrmmm, thats a good question, the addiditive puts extra lube into the fuel or sumthinklike that and just cause its a higher ocatane doenst mean it has the same stuff in it as leaded, i thinkyoull still have to use that addditive

 

[Demons1964]

Salem's right. The "lead" in leaded fuel stopped valve seat recession. Now that there is no lead present you need to substitute something for that. The lower octane of standard unleaded will more than likely cause your engine to knock (known as "pinging") if you're running standard timing. Pinging can still occur well below the point at which you can hear it with your ear and so by the time you hear it it's already doing some nasty damage to the internals of your engine!! You'll need to get the octane level up by using premium unleaded. In summary, use premium unleaded as well as an additive (flashlube or something similar).

Cheers,
Mark.

 

[Frd_thmsn]

lead replacement

Few of my mates have put those prozones in their car,
One is a ford XD, and two commodores a VK and a VC ( not sure on this one).

They all swear by them and reckon they work well, I think repco sell em for around $150.

Might be worth looking into.

 

[Indy_387]

Few of my mates have put those prozones in their car,
One is a ford XD, and two commodores a VK and a VC ( not sure on this one).

They all swear by them and reckon they work well, I think repco sell em for around $150.

Might be worth looking into.

Whats a Prozone?

 

[Trick Shift]

Is it 6cyl or V8?

 

[Frd_thmsn]

Whats a Prozone?

A prozone is a device that enables running leaded vehicles with unleaded fuel.

I really don,t know how it works, must be by magic.
If you wanted to check it out this is their sales blurb.
http://www.prozone.com.au/pro/brochure1.htm

 

[Indy_387]

Hmmm, thanks for that. Now I know.