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 Post subject: Fuel octane
PostPosted: Thu Jan 07, 2021 10:38 am 
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Joined: Tue Jul 17, 2012 2:16 pm
Posts: 8
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Hi,

Rookie 928 question .. I have a 1986 S2 4.7 no engine modifications completely stock... What is the most appropriate grade of fuel, have always used premium 98 Octane on more modern Porsches. This is my first time running older generation of Porsche.

Thanks


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 Post subject: Re: Fuel octane
PostPosted: Fri Jan 08, 2021 1:21 am 
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Joined: Mon Nov 05, 2007 4:15 pm
Posts: 2411
Location: BOURNEMOUTH
Hi :)

Always use V-Power... its 99 octane...your S2 like mine WILL run on standard unleaded BUT,,, you really should connect the low octane loop connector under the dash if you do otherwise the ecu will retard your timind and you WILL lose hp...

Once I managed to find a garage selling 5* leaded (100+ octane) and my S2 after around 10 miles went like S***T off a shovel.... it was truly amazing...

All the best Brett :)

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928S2 AUTO V8 4.7 1986-XPIPES ANDERSON RACE EXHAUST,K&N, WIZARDS OF NOS MAXX RACE CONTROLLER & WON RACE REVO NITROUS KIT 2000 HP CAPABLE.
-UK 928 1/4 Mile and Top Speed Record Holder-208.10 mph- Email managingdirector@pchealthcare.co.uk


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 Post subject: Re: Fuel octane
PostPosted: Sat Jan 09, 2021 4:50 pm 
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Joined: Tue Jul 17, 2012 2:16 pm
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Thanks for that, 99 octane it is ..


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 Post subject: Re: Fuel octane
PostPosted: Tue Feb 09, 2021 6:38 pm 
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Joined: Mon Mar 30, 2020 12:47 pm
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I run a 42 yr old 928 and runs on unleaded no probs due to the low compression
What I used to do when they took the lead out of the petrol was every so often go to my local airfield and get a couple of jerry cans of 100 Avgas.
I know quite a lot of classic car owners that do this to get the valves lubed with lead every so often
Only down side is the cost of Avgas as more expensive.

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Duncan

NE region.

1979 Porsche 928 owner for 35 yrs

BMW X5

1953 little grey Fergy!!


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