sainsbury's lead replacement petrol

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Fri 26 Nov 2004 23:02
sainsbury's lead replacement petrol - Peter C
Sainsbury's lead replacement petrol is 97 octane and only 2p more than 95 lead free. Could this be a poor man's Optimax ? After all Optimax is only 98 octane. No other retailer sells lead replacement for such a low price. is is OK for cars that need lead free ?

Cheers

Peter
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Fri 26 Nov 2004 23:42
sainsbury's lead replacement petrol - Schnitzel
The additives may damage poison the catalyst and lambda probe. The irony, is they're also as posionous as lead anyway! (abeit not very)
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Sat 27 Nov 2004 07:37
sainsbury's lead replacement petrol - Roger Jones
I thought LRP had just about gone. From the RAC site:

"The natural reduction in the number of vehicles, due to the aging of vehicles, means that the demand for LRP is reducing. As a result fewer petrol stations will have LRP available on the forecourt and it likely that by the end of 2003 LRP will no longer be available."

Anyway, having visited many websites and discussion groups I haven't found anyone with a good word to say about it, so I've left it alone since reviving my Capri and have used Optimax and Castrol Valvemaster lead substitute.
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Sat 27 Nov 2004 13:45
sainsbury's lead replacement petrol - Hugo {P}
I guess replacing and re seating the valves is another option.

H
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Sat 27 Nov 2004 16:22
sainsbury's lead replacement petrol - Doc
Sainsbury's lead replacement petrol is 97 octane...
Is is OK
for cars that need lead free ?


Cars fitted with CATS must only use unleaded.

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Sat 27 Nov 2004 19:25
sainsbury's lead replacement petrol - SlidingPillar
Since I need a resonable octane rating for my 1972 Morgan, I've been using LRP, despite having hardened valve seats fitted.

Super unleaded of course works fine, but costs more.
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Mon 23 Apr 2007 12:15
sainsbury's lead replacement petrol - HLyon
I poured some Redex Lead Replacement additive in with a full tank of super unleaded before a long journey at the weekend. I intended to put in Redex Injector cleaner but was in a hurry.

I've used 3/4 of the tank and the car seems to be running smoother than it was before. Is it pretty definate that I've killed my Cat? Do you think it will fail the next MOT?
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Mon 23 Apr 2007 12:25
sainsbury's lead replacement petrol - jc2
You can still buy Leaded but it is not cheap.When is your next MOT? Some re-action may come back if it is not too badly poisoned.
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Mon 23 Apr 2007 12:30
sainsbury's lead replacement petrol - Ruperts Trooper
Sainsbury's Super Unleaded 97 octane is usually 2p/litre more than their ordinary unleaded - I haven't seen LRP for ages.

To answer the OP, yes it's more cost-effective than branded high octane fuel.
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Mon 23 Apr 2007 12:40
sainsbury's lead replacement petrol - HLyon
Sorry, should have added that my car is a 98 Mazda 626 and that it's supposed to run on Unleaded, I put the additive in by accident. My MOT is in July.
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Mon 23 Apr 2007 12:33
sainsbury's lead replacement petrol - Cliff Pope
Since I need a resonable octane rating for my 1972 Morgan
I've been using LRP despite having hardened valve seats fitted.


I tried LRP in my 1964 Triumph but found it rotted the diaphrams in the carburettors and wasn't very good at stopping pinking anyway. I find Millers VSP and unleaded works best and works out cheaper than LRP. Especially since through experiment I now find only half the stated dose of Millers is just as effective at preventing pinking.
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Mon 23 Apr 2007 13:21
sainsbury's lead replacement petrol - jc2
It may well stop low-speed pinking but if you get high-speed detonation,the first you'll know about it is a hole in a piston.
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Mon 23 Apr 2007 13:46
sainsbury's lead replacement petrol - Stargazer {P}
Oh dear,

resurrest a 3 year old thread AND subtly change the subject=receipe for confusion

StarGazer
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Mon 23 Apr 2007 13:46
sainsbury's lead replacement petrol - Stargazer {P}
Sorry, that should be resurrect.....laptop keyboards is my only excuse.
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Tue 24 Apr 2007 11:34
sainsbury's lead replacement petrol - HLyon
Thought I was still mostly on topic, sorry for any confusion caused.
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