Lead Replacement additives?

100LL is fantastic for valve life, having about 5 times as much lead as the old Super. Use it about 25% in a tank.

I have used it for years and although I suspect the performance increase is maybe wishfull thinking the vehicles certainly start and run better.

Plugs foul quicker.

the diesel in the petrol trick I was told about years ago and vice versa eg 1/3 diesel 2/3 petrol for petrol powered things and 1/3 petrol to 2/3 diesel for diesel powered things was for stopping the mold build up in the tank in the wet season I have never been brave enough to try it. When I get a head done up I always get the hardend valves and so far have had no problems but my trucks and things dont do a lot of miles each year so my experance is not much hope this is of some help cheers Paul

How about Avgas ? 100 octane low lead.

I think you have to have some sort of permit to buy it? There was a scheme worked out a few years ago to make it available to members of classic car clubs, but you needed to keep a log book of some kind.

Penrite make Valve Shield, which you can buy in "bulk" quantities (500 ml bottles.)

The Avgas was via a permit system awhile ago and the new Cams regs only allow it in historic s I believe IDSTBC
But to run the Avgas you need a fairly substantial compression ratio for it to be of benefit (Just my opinion)

If you go to any airfield (preferably smaller ones, might be hard at Moorabbin or Bankstown) you will get a jerry can filled up. Problem is most AVGAS bowsers are on the active area so you will need someone with a security pass - pilot, engineer, airfield worker to escort you and then you will have to borrow a fuel company swipe card to operate the bowser. Some airfields have normal credit card facilities.

Most fuel agents, normally the local aircraft workshop or flying school, are in business and the more sales the better. They are filling up cans for car people all the time. The burnout hoons in their hot WRX think it will give them more performance while in reality it is stuffing their high compression precision engines and of course instantly destroying their cat converters with the lead.

Aircraft engines are 1930's technology and nearly all can trace their direct line back 70 years. They are relatively low compression, very low RPM (most have to be stripped for inspection if they over rev - some as little as 3,000rpm) and very poor life. Most do not get to their total rebuild life of 1,800 - 2,500 hours without some major serious corrective work along the way.

The point is AVGAS is nothing special, it is only a couple of octane over normal premium petrol so is not going to make your car run better. It is a great source of old engine friendly lead in this lead free world. The extra you pay for a litre of AVGAS over MOGAS and all the stuffing around to get it makes a can of Flashlube/Moreys/Lucas etc pretty cheap and convenient.

the diesel in the petrol trick I was told about years ago and vice versa eg 1/3 diesel 2/3 petrol for petrol powered things and 1/3 petrol to 2/3 diesel for diesel powered things was for stopping the mold build up in the tank in the wet season I have never been brave enough to try it. When I get a head done up I always get the hardend valves and so far have had no problems but my trucks and things dont do a lot of miles each year so my experance is not much hope this is of some help cheers Paul

To stop the mould build up in the tank, and to remove moisture due to condensation etc., add methylated spirits to diesel ( or petrol ). I use about 250ml once a month to the tank in my diesel Merc sedan. Have done for over 20 years with every vehicle that I've owned.

I use a mix of 50/50 Avgas / ULP 95 in old petrol start kerosine tractors for a bit of lead and so the fuel doesn't go stale sitting in the tank for months between use. Avgas costs around $2/litre.

I have a couple of those Fuel Star canisters on two of my cars and I rekon they are all right , one I have had on my HR ute for about 8 yrs , I mainly fitted because she would still ping on premium fuel and they are supposed to also increase the octane of the fuel as well . They arent real cheap but they last a long time and I have been considering putting one on my Superpower but havent done anything about it yet . Rob

Ok
Let the ol wives tales begin
LOL

<#1> Moth balls added to fool tank (now a shortage of male moths)
<#2> Draw n Pencil led added to fool tank (Not sure ifn they mean HB4 or wot)

WotSayU?

LOL
NEX
cya

Swishy
Had to read the second one twice . :
Peter