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George924S · Joined: 02 Jun 2015 Posts: 13 Location: Athens, Greece

My UK spec 1988 924S has the ( rare?) M150 option, no catalyst, running leaded petrol. I have been using high octane ( 100) unleaded Shell V- Power Racing petrol without any issues or whatsover

I wonder if it would do any good to use this Wurth Lead Substitute Additive to my petrol tank? Would i get any benefits from it in my car and if so what are these ???

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1988 924S

Cedric · Joined: 27 Aug 2004 Posts: 2809 Location: Sweden

No 924s should need leaded petrol

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1980 924 Turbo
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George924S · Joined: 02 Jun 2015 Posts: 13 Location: Athens, Greece

would it do any good to the engine/performance if i used this leaded substitute ?
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1988 924S

morghen · Joined: 21 Jan 2005 Posts: 9095 Location: Romania

I dont think so.
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Supercharger and EFI kits
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daniel · Joined: 18 Jun 2009 Posts: 686 Location: Sydney, Australia

The lead will keep your valve guides and seats in good condition as it is a natural lubricant (why it was added to fuel int eh first place). The lead boosts octane which is the main performance advantage, but has to be realised with high compression and or increased ignition advance.
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Over the top of skyline, total brake failure.... hit the wall at over 200 kp/h at the dipper, so anyone who has to brake for the esses is a pussy.
1977.5 Race Car, CAMS Group S Spec
1989 944 Cabriolet