Ok, cool thanx.Originally Posted by johno90
Unfortantly thats a complete negative. Without going to deep into the actual chemical science it cant be and never has been red oxide.
Only things that make a plug look like that are leaded fuels, fuel that has ethanol or some of those intank additives you can buy. Fyi fuels these days can have ethanol without advertising. Like bp95 has it but doesnt say unless you get the mdss and read it.
If your interested later on i can do the chemical break down of how it happens
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I would like to believe it was not caused by ethanol in fuel 'cos I have congenital aversion to ethanol added ULP 'cos I think it's bad for conventional old engines like mine(RB30). I've never used 95RON or 98RON. It always has been 91RON or once or twice with 98RON when I was experimenting LPG & 98RON ignition time(to find out if they are closer in terms of ignition timing needs). Leaded fuel is out of question I think 'cos it is no more.
I've been under the impression that it is illegal to sell ethanol added fuel without indicating it at the servo pump. You say otherwise, which got me thinking and worried.
Please do post the break down of the chemical reaction of the red stuff on the spark plugs.
And btw, I've never added any additive into petrol, but dunno whether somebody else added anything, but hope not.
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