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In this section we advise you, and provide assistance to others on various industry topics.

Leaded petrol in Unleaded tank

replies: 3
views: 1021
14 Jun 2004
Anonymous
Van die ouens wat saam met my werk vertel my dat jy Lood petrol (Leaded) kan ingooi in 'n voertuig wat eintlik Loodvrye (Unleaded)petrol neem sonder dat dit enige skade doen. Kan iemand dit dalk bevestig. Ek ken nie die dinge nie.
Dankie en Groetnis
Tinus
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14 Jun 2004
Johan
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Jy kan beslis nie 'leaded' petrol in die nuwe karre gebruik nie, want dit sal beslis die enjin beskadig. Die veiligste is om by die vervaardiger self uit te vind of dit toelaatbaar is.
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14 Jun 2004
Mark
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Tinus,
Most new vehicles that run on unleaded fuel make use of a Lambda sensor mounted on the exhaust outlet of the engine which is used to measure the air:fuel mixture and other system parameters.

I have been told that continued use of leaded fuel will damage this unit in the long run...but that in the case of an emergency leaded fuel may be used as long as you don't exceed 1 tank of leaded per every 4 tanks of unleaded fuel.

As I cannot verify the above for any other vehicle except my own...I would definitely consult the vehicle manufacturer concerned first.

Regards
Mark Lowe
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15 Jun 2004
Bryan
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Firstly to make the mistake of putting leaded fuel in an unleaded car the following has to occur.
1. The owner is not checking the petrol attendant.
2. The attendant is not checking.
3. The filler on the unleaded hose is smaller than the leaded. The leaded hose doesn't fit into the tank.
Mark is correct about the Lamda sensor but that is not the biggest problem. Your unleaded cars are fitted with catalytic convertors on the exhaust system. Carbon in leaded fuel block the convertor and once restricted your cars performance will be greatly affected, resulting in you needing to change the convertor at a cost of between R7000 and R15000 depending on your make.
NEVER use leaded in an unleaded car. There are NO excuses. If it is an emergency then use Sasol Duel-Fuel.

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