What fuel is used to replace super?

Sell Valve Saver at work....well my old work..still nath's work....cannt remember the ratio...someone will know.

people would use that with ULP but have also heard that PULP is recommended....more slimy....better protection????

Laura

I thnk people use to use a 250ml bottle for 50lt...???

Heard recently that ULP is often as low as 85 octane. Use that and you should be able to detonate your way to an early rebuild :)

To replace Super you have to use PULP, plus a lead substitute additive.

Kind of depends on what engine it is as well. I have a 54 Dodge with a 6cyl. side valve engine. Designed to run on Standard but I run it on regular unleaded (till I broke it recently) as it has hardened valve seats in the block as a standard thing. But if its a 60's Holden or something OHV (yuk) you will need a supplement. Got a feeling lead was only added to petrol in the 50's some time to solve the problem of valves embedding into the valve seats.

Could be wrong though.

BTW, I need a starter motor for a 230 inch Dodge.

ULP and a dab of Flash Lube(Upper cylinder lubricant)...about 10ml per tankful. This is what I used in the Valiant when motoring around.

Cheers

Shane,my outlaws have a ZL fairlane(85)which was a super model,he has run 91ron unleaded since they got rid of super(didnt even use that lead repl fuel)with a valve saver additive bought in 86 with 43k on it,now has 670k and still running like a top,no missing or burnt valves,so there goes needing hardened valves and seats theory.cheers Paul

Depends on vehicle.
1. Can turn back the timing a degree or two little and run ULP.
2. Run ULP with some valve saver if 91 octane OK.
3. Run 98 octane with some valve saver if higher compression, but 98 octane is lighter than super so engine will run a little lean unless you retune.

Thanks for all the info fellas, I havent owned a vehicle that use super since 1993, needed to know for play thing.


Shane

In my early model Commodore, i use ULP, and add 1 ml Flashlube per litre of ULP. As i understand it, using the more expensive PULP won't be of additional benefit.

Opal!!!! Bullcough bleep !
Its cheap, makes your car run proper good, and you get better MPG...

Joking!!!

Pajero definately runs better on Premium unleaded.

Most alloy head vehicles where setup to run ulp, i have found the list of vehicles which can run straight ulp and which you may have to use a lead replacement in with the fuel.


List of cars able to run ULP pre 86

if you can't get lrp or flashlube use a capfull of auto trans fluid a mechanic up my way uses it as suggested it to me. I'm only putting this in as a alternative if you can't get any flashlube.

Also too most older cars will run on 95 or 98 octaned fuel with some tunung best person to talk to is your mechanic as he is in hte know.

Most alloy headed vehicles have the hardend valve seats and guides, mainly stainless steel as they wear less then hardend steel.
I hope this helps???